81279 + Interview Questions in Mathematics QA in Mathematics

1.	Human Resources
Answer» Human resources are the people who make up the workforce of an organization, business sector, or economy. "Human capital" is sometimes used synonymously with "human resources", although human capital typically refers to a narrower effect.

Discussion

2.	a frog is there in a 12 metre deep well the frog wants to jump out of the well every time he jumps 3 metre and fall back by one represent the following situation mathematically and dry matically in how many jumps will he come
Answer» 6 or 7 times. but i am not sure 4 times jump and he out of well 6 times jump and frog out of well

2.

a frog is there in a 12 metre deep well the frog wants to jump out of the well every time he jumps 3 metre and fall back by one represent the following situation mathematically and dry matically in how many jumps will he come

Answer»

6 or 7 times. but i am not sure

4 times jump and he out of well

6 times jump and frog out of well

Discussion

3.	what sS DEPLETION OF W
Answer»

Discussion

4.	(0) He jumps 3 steps down and then jumps back 2 steps up.In how many jumps will he reach the water level?
Answer» 1 step jumps he will reach the water level incomplete questionsupload full image

4.

(0) He jumps 3 steps down and then jumps back 2 steps up.In how many jumps will he reach the water level?

Answer»

1 step jumps he will reach the water level

incomplete questionsupload full image

Discussion

5.	A water tank has steps inside it. A monkey is sitting on the topmost step (i.e., the firststep). The water level is at the ninth step.0) He jumps 3 steps down and then jumps back 2 steps up.10.In how many jumps will he reach the water level?After drinking water, he wants to go back. For this, hejumps 4 steps up and then jumps back 2 steps downin every move. In how many jumps will he reach backthe top step?If the number of steps moved down is represented bynegative integers and the number of steps moved up bypositive integers, represent his moves in part (i) and (ii)by completing the following;(a)- 3 + 28(b)4-2+.. 8. In (a) the sum (-8) represents goingdown by eight steps. So, what will the sum 8 in (b)represent?(ii)(ii)
Answer» thanks

Discussion

6.	walls and ceiling at20 per square metre.17. The area of the 4 walls of a room is 168 m2. The breadth and height of the room are 10is 77 m The length and breadth of the room are75and 4 m respectively. Find the length of the room.
Answer»

Discussion

7.	IS AVER TULLULLLSWIL JASSLUI€ 23.-5.-10. 15 and 10, what was his total at the end?5. A water tank has steps inside it. A monkey is sitting on the topmost step i.e., the first step). The water level is at the ninth step.He jumps 3 steps down and then jumps back 2 steps up. In how many jumps will he reach the water level?
Answer»

Discussion

8.	A water tank has steps inside it, A monkey is sitting on the topmost step(ie.tstep). The water level is at the ninth stepD) He jumps 3 steps down and then jumps back 2 steps up.In how many jumps will he reach the water level?(i) After drinking water, he wants to go back. For this,hejumps 4 steps up and then jumps back 2 steps downin every move. In how many jumps will he reach backthe top step?If the number of steps moved down is represented bynegative integers and the number of steps moved up bypositive integers, represent his moves in part (i) and (Gi)by completing the following, (a)-3+ 2-8(b) 4-2+down by eight steps. So, what will the sum 8 in (b(iii)- 8. In (a) the sum (-8) represents goingrepresent?ON AND SUBTRAC
Answer» Let the steps moved down be represented by positive integers and the steps moved up be represented by negative integers.(i) Initially, the monkey was at step = 1After 1st jump, the monkey will be at step = 1 + 3 = 4After 2nd jump, the monkey will be at step = 4 + (−2) = 2After 3rd jump, the monkey will be at step = 2 + 3 = 5After 4th jump, the monkey will be at step = 5 + (−2) = 3After 5th jump, the monkey will be at step = 3 + 3 = 6After 6th jump, the monkey will be at step = 6 + (−2) = 4After 7th jump, the monkey will be at step = 4 + 3 = 7After 8th jump, the monkey will be at step = 7 + (−2) = 5 After 9th jump, the monkey will be at step = 5 + 3 = 8After 10th jump, the monkey will be at step = 8 + (−2) = 6After 11th jump, the monkey will be at step = 6 + 3 = 9Clearly, the monkey will be at water level (i.e., 9th step) after 11 jumps.(ii) Initially, the monkey was at step = 9After 1st jump, the monkey will be at step = 9 + (−4) = 5After 2nd jump, the monkey will be at step = 5 + 2 = 7After 3rd jump, the monkey will be at step = 7 + (− 4) = 3After 4th jump, the monkey will be at step = 3 + 2 = 5After 5th jump, the monkey will be at step = 5 + (− 4) = 1Clearly, the monkey will reach back at the top step after 5 jumps.(iii) If steps moved down are represented by negative integers and steps moved up are represented by positive integers, then his moves will be as follows.Moves in part (i)− 3 + 2 − 3 + 2 − 3 + 2 − 3 + 2 − 3 + 2 − 3 = −8Moves in part (ii)4 − 2 + 4 − 2 + 4 = 8Moves in part (ii) represent going up 8 steps. can u send your whatsapp no. DO U HAVE 80 MARKS QESTION PAPER OF MATHS CHAPTER 1.2.3.4.5.6.7.

8.

A water tank has steps inside it, A monkey is sitting on the topmost step(ie.tstep). The water level is at the ninth stepD) He jumps 3 steps down and then jumps back 2 steps up.In how many jumps will he reach the water level?(i) After drinking water, he wants to go back. For this,hejumps 4 steps up and then jumps back 2 steps downin every move. In how many jumps will he reach backthe top step?If the number of steps moved down is represented bynegative integers and the number of steps moved up bypositive integers, represent his moves in part (i) and (Gi)by completing the following, (a)-3+ 2-8(b) 4-2+down by eight steps. So, what will the sum 8 in (b(iii)- 8. In (a) the sum (-8) represents goingrepresent?ON AND SUBTRAC

Answer»

Let the steps moved down be represented by positive integers and the steps moved up be represented by negative integers.(i) Initially, the monkey was at step = 1After 1st jump, the monkey will be at step = 1 + 3 = 4After 2nd jump, the monkey will be at step = 4 + (−2) = 2After 3rd jump, the monkey will be at step = 2 + 3 = 5After 4th jump, the monkey will be at step = 5 + (−2) = 3After 5th jump, the monkey will be at step = 3 + 3 = 6After 6th jump, the monkey will be at step = 6 + (−2) = 4After 7th jump, the monkey will be at step = 4 + 3 = 7After 8th jump, the monkey will be at step = 7 + (−2) = 5

After 9th jump, the monkey will be at step = 5 + 3 = 8After 10th jump, the monkey will be at step = 8 + (−2) = 6After 11th jump, the monkey will be at step = 6 + 3 = 9Clearly, the monkey will be at water level (i.e., 9th step) after 11 jumps.(ii) Initially, the monkey was at step = 9After 1st jump, the monkey will be at step = 9 + (−4) = 5After 2nd jump, the monkey will be at step = 5 + 2 = 7After 3rd jump, the monkey will be at step = 7 + (− 4) = 3After 4th jump, the monkey will be at step = 3 + 2 = 5After 5th jump, the monkey will be at step = 5 + (− 4) = 1Clearly, the monkey will reach back at the top step after 5 jumps.(iii) If steps moved down are represented by negative integers and steps moved up are represented by positive integers, then his moves will be as follows.Moves in part (i)− 3 + 2 − 3 + 2 − 3 + 2 − 3 + 2 − 3 + 2 − 3 = −8Moves in part (ii)4 − 2 + 4 − 2 + 4 = 8Moves in part (ii) represent going up 8 steps.

can u send your whatsapp no.

DO U HAVE 80 MARKS QESTION PAPER OF MATHS CHAPTER 1.2.3.4.5.6.7.

Discussion

9.	Verify a-ba+ bfor the0 21, b 18(ii a 75, b 84Use the sign of >,<or9.in(c) 23-41 + 11(d) 39+(-24)-(15)(e) 231+ 79+510.A water tank has steps insidestep). The water level is at tiHe jumps 3 steps dowIn how many jumps w(ii) After drinking waterjumps 4 steps up arn(i)
Answer» a) -12b) -15c)-7d)0e) -101

Discussion

10.	atertank has stops in ide it. Asep The water level is at the ninth stepmps 3 steps down and then jumps back 2 steps up.how many jumps will he reach the water level? 1r he wants to go back. For this, hehn 2 steps down
Answer» 1) monkey is on the 1st step, water level is on the 9th step.1st jump = 1 + 3 - 2 = 22nd jump = 2 + 3 - 2 = 33rd jump = 3 + 3 - 2 = 44th jump = 4 + 3 - 2 = 55th jump = 5 + 3 - 2 = 66th jump = 6 + 3 - 2 = 77th jump = 7 + 3 - 2 = 88th jump = 8 + 3 - 2 = 9 2) 1st jump = 9 - 4 + 2 = 72nd jump = 7 - 4 + 2 = 53rd jump = 5 - 4 + 2 = 34th jump = 3 - 4 + 2 = 1

10.

atertank has stops in ide it. Asep The water level is at the ninth stepmps 3 steps down and then jumps back 2 steps up.how many jumps will he reach the water level? 1r he wants to go back. For this, hehn 2 steps down

Answer»

1) monkey is on the 1st step, water level is on the 9th step.1st jump = 1 + 3 - 2 = 22nd jump = 2 + 3 - 2 = 33rd jump = 3 + 3 - 2 = 44th jump = 4 + 3 - 2 = 55th jump = 5 + 3 - 2 = 66th jump = 6 + 3 - 2 = 77th jump = 7 + 3 - 2 = 88th jump = 8 + 3 - 2 = 9

2) 1st jump = 9 - 4 + 2 = 72nd jump = 7 - 4 + 2 = 53rd jump = 5 - 4 + 2 = 34th jump = 3 - 4 + 2 = 1

Discussion

11.	a) The steps on which themouse jumps1213b) The steps on whichthe cat jumpsc) The steps on which both thecat and the mouse jump
Answer» kindly upload complete image.

Discussion

12.	& Verify a-(-6)= a + b for the following values of a and b.(ii) a = 118, b = 125(1) a= 21, b = 18(iv) a = 28, b = 11(iii) a= 75, b = 849. Use the sign of >, < or= in the box to make the statements true.(-8)-(-4)(a) (-8) + (-4)15 - 8+ (-9)(b) (-3) + 7 -(19)23-41-11(c) 23-41 +1136 + (- 52)-(-36)(d) 39 + (- 24) - (15)-399 + 159 +81(e) - 231 + 79 + 51A water tank has steps inside it. A monkey is sitting on the tostep). The water level is at the ninth step.) He jumps 3 steps down and then umps back 2 stepsany jumps will he reache water level?
Answer» no answer aap bato mcmckck c c.dvmkmdck..c.fmv.fd f.fjfjdkc vmv.

Discussion

13.	surface area and volumie 0I tio8 A room is 6m long, 5m wide and 4m high. The doors and windows in the roomoccupy 4 square metres of space. Find the cost of papering the remaining portion ofthe walls with paper 75cm wide at the rate of 2.40 per metre.
Answer» Given,Room length l = 6m, breadth b = 5m, height h = 4m Surface area of walls= 2(lh + bh)= 2(64 + 54) = 2(24 + 20)= 88 m^2 Portion of walls for papering= 88 - 4 = 84 m^2 Now length of paper required = 84/.75= 8400/75 = 112 m Cost of paper required = 112*2.40= Rs 268.8

13.

surface area and volumie 0I tio8 A room is 6m long, 5m wide and 4m high. The doors and windows in the roomoccupy 4 square metres of space. Find the cost of papering the remaining portion ofthe walls with paper 75cm wide at the rate of 2.40 per metre.

Answer»

Given,Room length l = 6m, breadth b = 5m, height h = 4m

Surface area of walls= 2(l*h + b*h)= 2(6*4 + 5*4) = 2(24 + 20)= 88 m^2

Portion of walls for papering= 88 - 4 = 84 m^2

Now length of paper required = 84/.75= 8400/75 = 112 m

Cost of paper required = 112*2.40= Rs 268.8

Discussion

14.	5. A class room is 12 m long, 5 m wide and 3 m high. How many pupils should it be used for if each pupilrequired 5 m3 of air space?
Answer»

Discussion

15.	The ages of Nikita and Monika are in the ratio 5:7. Four years later the sum of their ages will be56 years. What are their present ages?
Answer» Nikita age 20 and Monika age 28 Let,Nikita's present age=5xMonika's present age=7xfour years later Nikita's age=5x+4and Monika's age=7x+4ATQ, 5x+4+7x+4=56=>12x+8=56=>12x=56-8=48=>x=48/12=4So, Nikita's's present age=5x=5×4=20And, Monika's present age=7x=7×4=28

15.

The ages of Nikita and Monika are in the ratio 5:7. Four years later the sum of their ages will be56 years. What are their present ages?

Answer»

Nikita age 20 and Monika age 28

Let,Nikita's present age=5xMonika's present age=7xfour years later Nikita's age=5x+4and Monika's age=7x+4ATQ, 5x+4+7x+4=56=>12x+8=56=>12x=56-8=48=>x=48/12=4So, Nikita's's present age=5x=5×4=20And, Monika's present age=7x=7×4=28

Discussion

16.	The ages of Rahul and Haroon are in the ratio 5:7. Four years later the sum of their ages will be 56 years. What are their present ages?
Answer»

Discussion

17.	e card is drawn at random from a well-shufled deck of 52 cards. Find the probabilitythat the card drawn is (1) a 4. (il) a queen, (ill) a black card.
Answer»

Discussion

18.	1. A card is drawn at random form a well shufled pack of 52 playing cards. Find the probability of getting neither ared card nor a green.
Answer» Total number of Outcome (Cards) = 52 First eliminate half the deck, so as to get rid of the red cards. This leaves, 1/2× 52 = 26 Cards However, two queens were already gotten rid of when all the red cards were removed, leaving only two black queens.Thus, we take two black queens away from our remaining cards, 26 - 2 = 24 ∴ Number of Favourable Outcomes = 24 P(getting neither a Red nor a Queen) = 24/52 = 6/13

18.

1. A card is drawn at random form a well shufled pack of 52 playing cards. Find the probability of getting neither ared card nor a green.

Answer»

Total number of Outcome (Cards) = 52

First eliminate half the deck, so as to get rid of the red cards. This leaves,

1/2× 52 = 26 Cards

However, two queens were already gotten rid of when all the red cards were removed, leaving only two black queens.Thus, we take two black queens away from our remaining cards,

26 - 2 = 24

∴ Number of Favourable Outcomes = 24

P(getting neither a Red nor a Queen) = 24/52

= 6/13

Discussion

19.	at? 50. A card is drawn at random from a well sideck of 52 cards. Find the probability of getting aclub:
Answer»

Discussion

20.	8. The following table given the relation between natural number and odd numbX 1 2 3 4 5 6Y 3 57 9 11 13
Answer» y=2x+1. where x is a natural number

Discussion

21.	ven times a two-digit number is equal to four times the number formed by reversing thedigits. The sum of the digits of the number is 3. Find the numb
Answer» Let numbers be x at ones place and y at tens place so 10y+x is that digit now reversed digit is 10x+yaccording to question 7 (10y+x)=4(10x+y)x=2y (i)now given x+y=3from eq. i 2y=x2y+y=3y=1sox=2required original no. is 21 and reversed digit is 12

Discussion

22.	the missing digits :7 L 542 3313135 1 1
Answer» 73,423,135 ans 651 is correct answer

Discussion

23.	3a two digit number is equal to four times the number obtained byreversing the order of its digits. If the difference of the digits is 3, determine theven tnumbt ioining the noints (-4, 6) and
Answer» Let numbers be x at ones place and y at tens place so 10y+x is that digit now reversed digit is 10x+yaccording to question 7 (10y+x)=4(10x+y)x=2y (i)now given x-y=3from eq. i 2y=x2y-y=3y=3sox=63 required original no. is 36 and reversed digit is 63 Like my answer if you find it useful!

23.

3a two digit number is equal to four times the number obtained byreversing the order of its digits. If the difference of the digits is 3, determine theven tnumbt ioining the noints (-4, 6) and

Answer»

Let numbers be x at ones place and y at tens place so 10y+x is that digit now reversed digit is 10x+yaccording to question 7 (10y+x)=4(10x+y)x=2y (i)now given x-y=3from eq. i 2y=x2y-y=3y=3sox=63 required original no. is 36 and reversed digit is 63

Like my answer if you find it useful!

Discussion

24.	Prove that 2k + 7 is an odd integer, wherek is an integer.0.9.
Answer» 2k+7=2k+6+12(k+3)+1as k+3 is an odd integer hence when multiplied by 2 will give a even number and when 1 is added to an even number it always results in an odd numberhence proved.

Discussion

25.	. Find the A.P. if ther6th term Ă¸f the A,P. is 19 and the16th term is 15 more than the 11th term.
Answer» Please like the solution 👍 ✔️ I'm sorry bt ur answer is wrong

25.

. Find the A.P. if ther6th term Ă¸f the A,P. is 19 and the16th term is 15 more than the 11th term.

Answer»

Please like the solution 👍 ✔️

I'm sorry bt ur answer is wrong

Discussion

26.	A card is drawn at random from a well shufñled deck of 52 cards. Find the probability ofgetting neither a red card nor a queen.10.
Answer» Total number of Outcome (Cards) = 52 First eliminate half the deck, so as to get rid of the red cards. This leaves, 1/2× 52 = 26 Cards However, two queens were already gotten rid of when all the red cards were removed, leaving only two black queens.Thus, we take two black queens away from our remaining cards, 26 - 2 = 24 ∴ Number of Favourable Outcomes = 24 P(getting neither a Red nor a Queen) = 24/52 = 6/13

26.

A card is drawn at random from a well shufñled deck of 52 cards. Find the probability ofgetting neither a red card nor a queen.10.

Answer»

Total number of Outcome (Cards) = 52

First eliminate half the deck, so as to get rid of the red cards. This leaves,

1/2× 52 = 26 Cards

However, two queens were already gotten rid of when all the red cards were removed, leaving only two black queens.Thus, we take two black queens away from our remaining cards,

26 - 2 = 24

∴ Number of Favourable Outcomes = 24

P(getting neither a Red nor a Queen) = 24/52

= 6/13

Discussion

27.	A card is drawn at random from a well shuffled desk Of 52 cards. find the probability of getting neither a red card nor a queen
Answer» Total number of Outcome (Cards) = 52 First eliminate half the deck, so as to get rid of the red cards. This leaves, 1/2× 52 = 26 Cards However, two queens were already gotten rid of when all the red cards were removed, leaving only two black queens.Thus, we take two black queens away from our remaining cards, 26 - 2 = 24 ∴ Number of Favourable Outcomes = 24 P(getting neither a Red nor a Queen) = 24/52 = 6/13

27.

A card is drawn at random from a well shuffled desk Of 52 cards. find the probability of getting neither a red card nor a queen

Answer»

Total number of Outcome (Cards) = 52

First eliminate half the deck, so as to get rid of the red cards. This leaves,

1/2× 52 = 26 Cards

However, two queens were already gotten rid of when all the red cards were removed, leaving only two black queens.Thus, we take two black queens away from our remaining cards,

26 - 2 = 24

∴ Number of Favourable Outcomes = 24

P(getting neither a Red nor a Queen) = 24/52

= 6/13

Discussion

28.	11. A card is drawn at random from a well shufled deck of 52 cards. Find the probability ofgetting neither a red card nor a queen.
Answer» Thank you

Discussion

29.	10. A card is drawn at random from a well shugetting neither a red card nor a queern.iffled deck of 52 cards. Find the probability of
Answer»

Discussion

30.	What is air pollution? Write its causes.
Answer» Air pollution refers to the contamination of the air, irrespective of indoors or outside. A physical, biological or chemical alteration to the air in the atmosphere can be termed as pollution. It occurs when any harmful gases, dust, smoke enters into the atmosphere and makes it difficult for plants, animals and humans to survive as the air becomes dirty.Causes of Air pollution include:1. Burning of Fossil Fuels:2. Agricultural activities3. Exhaust from factories and industries4. Mining operations:

Discussion

31.	PORNOविन्दु-की -1,30 केबीकी परी ज्ञात करें।
Answer»

Discussion

32.	There are ten tubewells in a lane of fterm impact on the water table?
Answer» If this happens then the the people of the fifty houses use the ten tube wells, then the water required by themis drawn from the ground. If these tube wells are used for long time, then the groundwater would be reduced and the water table would go down.The rainwater harvesting is a method used to conserve water at the ground level for future use.

Discussion

33.	Calculate the probability of getting a red face from a wellshuffled deck of cards.
Answer» Total number of cards in a pack =52 Number of red cards= 13+13=26 P( getting a red card)=26/52=1/2

33.

Calculate the probability of getting a red face from a wellshuffled deck of cards.

Answer»

Total number of cards in a pack =52

Number of red cards= 13+13=26

P( getting a red card)=26/52=1/2

Discussion

34.	A card is drawn from a well-shuffled deck of 52cards. What is the probability that it is queen ofspade?
Answer» Total number of cards=52 Total queen of spade=1p(getting a queen of spade)=No of favorable outcome/total outcome =1/52 total number of cards=52 total queen of spade =1p(getting a queen of spade )= No of favorable outcome/total outcome =1/52

34.

A card is drawn from a well-shuffled deck of 52cards. What is the probability that it is queen ofspade?

Answer»

Total number of cards=52

Total queen of spade=1p(getting a queen of spade)=No of favorable outcome/total outcome

=1/52

total number of cards=52

total queen of spade =1p(getting a queen of spade )= No of favorable outcome/total outcome

=1/52

Discussion

35.	One card is selected from a well-shuffled deck of 52 cards. Fnd the probability ofgetting a card with odd composite number.
Answer» Sample space=52Favourable event(9,15,21,25,27,33,35,39,45,49,51)=11 Probability=11/52

35.

One card is selected from a well-shuffled deck of 52 cards. Fnd the probability ofgetting a card with odd composite number.

Answer»

Sample space=52Favourable event(9,15,21,25,27,33,35,39,45,49,51)=11

Probability=11/52

Discussion

36.	One card is drawn from a well-shuffled deck of 52 cards. Calculate the probability that thecard will be "not an ace".24.
Answer»

Discussion

37.	card is drawn at random from a well shuffled deck of 52 cards. Find the probability of getting neither a red card nor a queen.
Answer» number of red cards =26 number of queen cards which are not red= 2 number of red cards or queen cards= 26+2= 28 the required probability= 28/52 = 7/13 the probability that the card is neither red nor queen= 1- (7/13) = 6/13

37.

card is drawn at random from a well shuffled deck of 52 cards. Find the probability of getting neither a red card nor a queen.

Answer»

number of red cards =26

number of queen cards which are not red= 2

number of red cards or queen cards= 26+2= 28

the required probability= 28/52 = 7/13

the probability that the card is neither red nor queen= 1- (7/13) = 6/13

Discussion

38.	A card is drawn at random from a well shuffled deck of 52 cards. Find the probability ofgetting neither a red card nor a queen
Answer» total no of cards=52no: of cards not favourable=28(26 red + 2 black queen)favourable cards=52-28=24.probability = 24/52 =6/13

Discussion

39.	One card is drawn from a well-shuffled deck of 52 cards. Find the probabiltya) of a face cardb) not the queen of diamond
Answer» Total no of cards = 52 a) The king, queen and kjack are called face cards. So there are 3*4 = 12 face cards Probability = 12/52 = 3/13 b) no of queen of diamond = 1 So the probability = 1/52 Like my answer if you find it useful!

39.

One card is drawn from a well-shuffled deck of 52 cards. Find the probabiltya) of a face cardb) not the queen of diamond

Answer»

Total no of cards = 52

a) The king, queen and kjack are called face cards.

So there are 3*4 = 12 face cards

Probability = 12/52

= 3/13

b) no of queen of diamond = 1

So the probability = 1/52

Like my answer if you find it useful!

Discussion

40.	8. When a card is drawn from a wellshuffled deck of 52 cards, then find theprobability of NOT getting a red facedcard.2
Answer» tq

Discussion

41.	A card is drawn at random from a well shuffled deck of 52 cards. Find the probability ofgetting neither a red card nor a queen.10.
Answer»

Discussion

42.	11. A card is drawn at random from a well shuffled deck of 52 cards. Find the probability ofgetting neither a red card nor a queen.
Answer»

Discussion

43.	IfP(y) is any point on the line joining the points A(a,0) and BOHthat. x +2 1
Answer» Equation of the line is Ax+By+C=0 If x-interception isA(a,0)and y-interception isB(0,b))then they need to satisfy line equation Aa+C=0;Bb+C=0 from which you can find A=−C/a;B=−C/b After substituting to line equation −C/ax−C/by=−C or x/a+y/b=1

43.

IfP(y) is any point on the line joining the points A(a,0) and BOHthat. x +2 1

Answer»

Equation of the line is

Ax+By+C=0

If x-interception isA(a,0)and y-interception isB(0,b))then they need to satisfy line equation

Aa+C=0;Bb+C=0

from which you can find

A=−C/a;B=−C/b

After substituting to line equation

−C/a*x−C/b*y=−C

or

x/a+y/b=1

Discussion

44.	400 ream papers were send through a truck. Out of these 2800 quirepapers were unloaded at Thane and the remaining were unloaded atKalyan. How many papers were unloaded at Kalyan?.
Answer»

Discussion

45.	If the SP of 10 handmade papers is equal to the CP of 25 handmade papers, find thpercentage of profit or loss.
Answer» when cp of M paper =sp of N paper %profit/loss=[(M-N)/N]100 [(25-10)/10]100= (15/10)*100=150%

45.

If the SP of 10 handmade papers is equal to the CP of 25 handmade papers, find thpercentage of profit or loss.

Answer»

when cp of M paper =sp of N paper

%profit/loss=[(M-N)/N]*100

[(25-10)/10]*100= (15/10)*100=150%

Discussion

46.	10. Three clerks can type 6 research papers in12 days. Working at the same rate, how longwill it take for 2 clerks to type 3 such papers?n.1A
Answer» which chapter is this 3 clerks can type 6 papers in 12 days. Then, 3 clerks can type 3 papers in 12/2 = 6 days Let 2 clerks will x days to type 3 such papers. So,36 = 2xx = 3*3 = 9 Therefore,2 clerks will take 9 days to type 3 papers.

46.

10. Three clerks can type 6 research papers in12 days. Working at the same rate, how longwill it take for 2 clerks to type 3 such papers?n.1A

Answer»

which chapter is this

3 clerks can type 6 papers in 12 days.

Then, 3 clerks can type 3 papers in 12/2 = 6 days

Let 2 clerks will x days to type 3 such papers.

So,3*6 = 2*xx = 3*3 = 9

Therefore,2 clerks will take 9 days to type 3 papers.

Discussion

47.	31. Provide a suitable classification for resourceson the basis of ownership. Mention mainfeatures of any three types of such resources.
Answer» 1) Individual: Resources owned by individuals are called Individual Resources. For example – land owned by farmers, house, etc.2) Community: Resources owned by community or society are called Community Owned Resources. For example – Graveyard, grazing land, ponds, burial grounds, park, etc.3)National Resources: Resources owned by Individual Nations are called National Resources. For example – Government land, Roads, canals, railway, etc.4)International Resources: Resources regulate by International bodies are called International Resources. For example – Ocean and sea beyond 200 km of the Exclusive Economic Zone and is called open sea or ocean. No individual country can utilize these resources without the permission of International bodies.

Discussion

48.	(d) p1,q- 2 and3dr-310 Ifp 1,g- 2and(a) p++2pq(c) pr 3pgr
Answer» (1)²+(2)²+212=1+4+4=9 (1)³+(2)³+(-3)³-312*-3=1+2-27+18=-6

48.

(d) p1,q- 2 and3dr-310 Ifp 1,g- 2and(a) p++2pq(c) pr 3pgr

Answer»

(1)²+(2)²+2*1*2=1+4+4=9

(1)³+(2)³+(-3)³-3*1*2*-3=1+2-27+18=-6

Discussion

49.	Suggest three ways to conserve water.
Answer» Three ways to conserve water: - 1)Rainwater harvesting- it is a process of storing rainwater in vessels of a big surface area. 2)Preserving water bodies from factory wastes. 3)The factory waste contains harmful products that pollute rivers. 4)Turn off the tap while brushing your teeth and washing your hands.

49.

Suggest three ways to conserve water.

Answer»

Three ways to conserve water: -

1)Rainwater harvesting- it is a process of storing rainwater in vessels of a big surface area.

2)Preserving water bodies from factory wastes.

3)The factory waste contains harmful products that pollute rivers.

4)Turn off the tap while brushing your teeth and washing your hands.

Discussion

50.	( \frac { 3 } { 5 } ) ^ { 8 } \times ( \frac { 3 } { 5 } ) ^ { 3 }
Answer» simplify and give answer in exponential form

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Human Resources

a frog is there in a 12 metre deep well the frog wants to jump out of the well every time he jumps 3 metre and fall back by one represent the following situation mathematically and dry matically in how many jumps will he come

what sS DEPLETION OF W

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e card is drawn at random from a well-shufled deck of 52 cards. Find the probabilitythat the card drawn is (1) a 4. (il) a queen, (ill) a black card.

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ven times a two-digit number is equal to four times the number formed by reversing thedigits. The sum of the digits of the number is 3. Find the numb

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card is drawn at random from a well shuffled deck of 52 cards. Find the probability of getting neither a red card nor a queen.

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IfP(y) is any point on the line joining the points A(a,0) and BOHthat. x +2 1

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31. Provide a suitable classification for resourceson the basis of ownership. Mention mainfeatures of any three types of such resources.

(d) p1,q- 2 and3dr-310 Ifp 1,g- 2and(a) p++2pq(c) pr 3pgr

Suggest three ways to conserve water.

( \frac { 3 } { 5 } ) ^ { 8 } \times ( \frac { 3 } { 5 } ) ^ { 3 }

Verify a-ba+ bfor the0 21, b 18(ii a 75, b 84Use the sign of >,<or9.in(c) 23-41 + 11(d) 39+(-24)-(15)(e) 231+ 79+510.A water tank has steps insidestep). The water level is at tiHe jumps 3 steps dowIn how many jumps w(ii) After drinking waterjumps 4 steps up arn(i)