332354 + Interview Questions in Secondary School in Math

1.	What are the purpoes of data handling in our daily uses
Answer» Data management planning will make your WORK easier in the long run and benefit your team, COLLABORATORS, INSTITUTION and broader COMMUNITY. Good data handling will make data management much easier.Performance of data handling or input/output (i/o) often matters and you must use multiple systems and STORAGE resources to get things done.

Discussion

2.	The cost of 20 pens and 17 pencils is rs 418 what is the xost of 60 pens and 51 pencils
Answer» APNE AAP nikal le bhai MERE ko bhi nhi AATA

Discussion

3.	Difference between logistic regression and linear classification
Answer» In linear regression, the outcome (dependent VARIABLE) is continuous. It can have any one of an INFINITE NUMBEROF possible values. In LOGISTIC regression, the outcome (dependent variable) has only a limited number ofpossible values. Logistic regression isused when the response variable iscategorical in NATURE.

Discussion

4.	Difference between significant figures and significant notation
Answer» Significant notation is a WAY how scientists DEAL with very large or SMALL numbers. that's all i know about significant notation...HOPE it helps.

Discussion

5.	Slope of a linear regression line is 1.5, and when x is 10 y takes the value of 8. determine the intercept of the regression line.
Answer» x=10 y=8 m=1.5 mx+c=y put the values in this way 1.5m+10=8 1.5m=8-10 1.5*m=-2 m=-2/1.5

5.

Slope of a linear regression line is 1.5, and when x is 10 y takes the value of 8. determine the intercept of the regression line.

Answer»

x=10

y=8

m=1.5

mx+c=y

put the values

in this way

1.5*m+10=8

1.5*m=8-10

1.5*m=-2

m=-2/1.5

Discussion

6.	Sachin walks 7 km west of his house and turned to his left and walked 5 km.then he moves 10 km towards east and then again 3 km west .finally he turns left and wlks 2 km.how far and in which direction is sachin from his house
Answer» Taking HOUSE as the origin on a graph , TAKE x AXIS west , y axis north , x' axis east , y' axis SOUTH . then sachin is 7km far from his house at final and he is in North direction ACCORDING to the house .

Discussion

7.	Rohan is 7th to the left of akshay in a row of boys. vijay, who is 20th from the left end of the row is 7th to the right of akshay. if geet who is 3rd to the right of rohan is 20th from the right end of the row, how many boys are there in the row?
Answer» Let me write the position of the boys so that it'll be easy to cross check first and then I'll explain. First of all there are 29 boys in total. someone = 1st place Rohan = 6th place Geet = 9th place Akshay = 13th place Vijay = 20th place. someone = 29th place. Hope the positions are clear to you. Now, In order to solve this question you have to PUT any one at a FIXED POINT. I have chosen Akshay to be fixed. According to the question I have place Rohan 7th position LEFT to Akshay and Vijay 7th position RIGHT to Akshay. Now the most important clue Vijay is at 20th position from left end sof the row and Geet is sitting third next to Rohan and is at 28 position from the right end. Therefore if vijay is at 20th position from left Akshay will be at 13th position and Rohan will be at 6th position.

7.

Rohan is 7th to the left of akshay in a row of boys. vijay, who is 20th from the left end of the row is 7th to the right of akshay. if geet who is 3rd to the right of rohan is 20th from the right end of the row, how many boys are there in the row?

Answer»

Let me write the position of the boys so that it'll be easy to cross check first and then I'll explain.

First of all there are 29 boys in total.

someone = 1st place

Rohan = 6th place

Geet = 9th place

Akshay = 13th place

Vijay = 20th place.

someone = 29th place.

Hope the positions are clear to you.

Now, In order to solve this question you have to PUT any one at a FIXED POINT.

I have chosen Akshay to be fixed. According to the question I have place Rohan 7th position LEFT to Akshay and Vijay 7th position RIGHT to Akshay.

Now the most important clue Vijay is at 20th position from left end sof the row and Geet is sitting third next to Rohan and is at 28 position from the right end.

Therefore if vijay is at 20th position from left Akshay will be at 13th position and Rohan will be at 6th position.

Discussion

8.	What is the greatest 4 digit number which is divisible by 11,44,66,88 and 99?
Answer» Lcm of 11 44 66 88 99 =11×2×2×2×3×3 =792 so take the first number multiple by 792 in FOUR digit do the ANSWER is 1582

Discussion

9.	Solve: x-4/3+3x-3/35=5x-31/9-x+9/28
Answer» Hey there........here is UR ANSWER....hope it HELPS u...........THANKS

Discussion

10.	Ram is five years elder to his youngest sibling shreya. shreya is two years younger than her brother ritesh. ritesh is 13 years old and is ram's brother. how old will ram be in two years from now?
Answer» Age of Ritesh = 13 YEARS Age of Shreya = Ritesh's age - 2 Age of shreya = 13 - 2 Age of shreya = 11 years Age of Ram = age of shreya + 5 Age of ram = 11 + 5 Age of ram = 16 years After 2 years from now, he will be ( his present age + 2 ) => ( 16 + 2 ) = 18 years $.$

Discussion

11.	Ratio between 2 numbers is 5 : 7 and their product is 560.what is the difference between 2 numbers?
Answer» Let NUMBERS are 5X and 7x Given, Their product = 560 => 5x × 7x =560 => 35x² = 560 $=> {x}^{2} = \frac{560}{35} \\ \\ => {x}^{2} = 16 \\ \\ => x = 4$ Then, Their difference => 7x - 5x => 7( 4 ) - 5( 4 ) => 28 - 20 => 8

Discussion

12.	Rajiv can do a piece of work in 10 days , venky in 12 days and ravi in 15 days. they all start the work together, but rajiv leaves after 2 days and venky leaves 3 days before the work is completed. in how many days is the work completed ?
Answer» TOTAL work=lcm of 10,12,15=180 rajiv 1 day work=180/10=18 venky 1 day work=180/12=15 ravi 1 day work=180/15=12 all three 1 day work=18+15+12=4let X be the DAYS to completion of work rajiv WORKING day=2 venky working days=x-3 ravi working days=x now,18×2+15(x-3)+12x=180 36+15x-45+12x=180 27x-9=180 x=189/27=7 days

Discussion

13.	Raja bought 10 mobiles for rs.8000. he repaired and sold them at rs.2400 per pair. he made profit of 20% per pair. how much did he spend on repairs totally?
Answer» ASK who BUY the CELL

Discussion

14.	How to write $316.7 million in numbers
Answer» It WRITE in MILLION 31670000.0

Discussion

15.	1^1 + 3^2 + 5^2 + 7^2 + ......... 25^2 =
Answer» ANSWER is an ATTACHMENT

Discussion

16.	A rectangular cubical piece of metal dimensions 2 cm x 3 cm x 4 cm is melted . Some more of the metal is added and it is made into a cube . The cube has integral measures for its sides . What is the minimum amount of metal that is added and what is the size of this cube ?
Answer» SORRY ..... 1ST TIME i was WRONG but it is PREFECT

Discussion

17.	denominator of a number is 4 less than its numerator if the six added to the numerator it becomes twice the
Answer» LET the NUMERATOR be x So, Denominator will be ( x - 4 ) $fraction \: = \frac{x}{ x - 4}$ Given, if 6 is added to numerator,it becomes TWICE the original fraction, Let's continue ACCORDING to the QUESTION, $= > \frac{x + 6}{x - 4} = \frac{2(x)}{x -4 } \\ \\ => x + 6 = 2x \\ \\ => 6 = 2x - x \\ \\ = > x = 6$ Hence, $fraction \: = \frac{x}{x - 4} = \frac{6}{6 - 4} = \frac{6}{2} = 3$

Discussion

18.	Prove that (2,-2), (-2,1) and (5,2) are the vertices of right angles triangle. find the area of the triangle and the length of the hypotenuse.
Answer» 1.Use the distance formula to calculate the distance between the three points. 2. Substitute the VALUES in the pythagoras formula as follows. (side 1)^2 + (side 2)^2 = (side 3)^2 where ^2 implies the distance being squared, and, side 3 is the longest side. a.If the left hand side of the equation is equal to the right hand side of the equation, Congratulations! The given points might be the vertices of a right angled TRIANGLE. Also, the longest side is the hypotenuse. b.If not, it isn't a right angled triangle. 3. But we're not SURE as of yet if the given points indeed enclose a triangle or not, because we have not yet checked out the area of our triangle. By using the area formula, we calculate the area of the triangle. a. If the area is found to be a substantial amount, well and GOOD! If condition 2.a is satisfied along with this, you have your right angled triangle! b.If the area comes to equal 0 square units, the given points do not enclose a triangle, but are actually, collinear points.

18.

Prove that (2,-2), (-2,1) and (5,2) are the vertices of right angles triangle. find the area of the triangle and the length of the hypotenuse.

Answer»

1.Use the distance formula to calculate the distance between the three points.

2. Substitute the VALUES in the pythagoras formula as follows.

(side 1)^2 + (side 2)^2 = (side 3)^2

where ^2 implies the distance being squared,

and, side 3 is the longest side.

a.If the left hand side of the equation is equal to the right hand side of the equation, Congratulations! The given points might be the vertices of a right angled TRIANGLE. Also, the longest side is the hypotenuse.

b.If not, it isn't a right angled triangle.

3. But we're not SURE as of yet if the given points indeed enclose a triangle or not, because we have not yet checked out the area of our triangle.

By using the area formula, we calculate the area of the triangle.

a. If the area is found to be a substantial amount, well and GOOD! If condition 2.a is satisfied along with this, you have your right angled triangle!

b.If the area comes to equal 0 square units, the given points do not enclose a triangle, but are actually, collinear points.

Discussion

19.	Principal amount is 15320 amount received is 30640 time period is 6 years find the rate of interest
Answer» Here is ur answer... GIVEN, P=15320 A=30640 t=6yrs we know that , A=P+I I=A-P =30640-15320 =15320 R=I×100/P×t =15320×100/15320×6 =50/3 =16.6% ~17% HOPE this MAY help...

Discussion

20.	One of the factors of ( 36x^2 - 1 ) + ( 1 + 6x )^2 = ?
Answer» Its ONE FACTOR is (6x+1)

Discussion

21.	If ( x^60 + 60 ) is divided by (x + 1 ),what is the remainder ?
Answer» REMAINDER...............61

Discussion

22.	Convert the given second to hours minutes and second using struct in c
Answer» PLZZZ WRITE QUESTIONS CLEAR

Discussion

23.	Show that pair of linear equations 3x + 4y =7 and 3/4 x +y =4 has no aolution
Answer» 3x+4y=7 ..(1) 3/4x+ y=4...(2)=> MULTIPLY the FOLLOWING equation(2) by 4,we get 3x+4y=16 . as you see coefficients of X and y are same so it has no solution.Hope it helps you...

Discussion

24.	compute the sum \[\frac{1}{\sqrt{100} + \sqrt{102}} + \frac{1}{\sqrt{102} + \sqrt{104}} + \frac{1}{\sqrt{104}+\sqrt{106}} + \cdots + \frac{1}{\sqrt{9998} + \sqrt{10000}}.\]
Answer» What is your QUESTION.. you POST question PROPERLY.

Discussion

25.	Maths questionif a person drinks 8 glasses in a day how much glasses he drinks in a month
Answer» In 1 DAY, PERSON DRINKS 8 glasses We know, 31 DAYS = 1 month Hence, 31 days = 31 × 8 glasses => 1 month = 248 glasses Hence, person will drink 248 glasses in a month. $.$

Discussion

26.	15 men or 18 women can complete a piece of work in 45 days. if 5 men and 6 women work together then the work will be completed in
Answer» 15 men =18 wmomen 1 WOMEN =15/18 =5/6 men 5 men +6 women =5 +6×5/6=5+5=10 men 15 men KRTE h= 45days me 1 men krega =45×15 days 10 men krega =45×15/10==67½ days

Discussion

27.	33 men can do a job in 30days. if 44 men startd the job together and after every day of the work , one person leaves .what is the minimum number of days requred to complete the whole work
Answer» The SPEED they WORK with

Discussion

28.	Ahmed lent Amir Rs 8000 at simple interest for 3 years at the rate of 5% per annum. How much more would he have gained, had he lent it at compound interest?
Answer» Given p = 8000 rate 5% Time 3 YEARS SI = P × R × T/ 100 8000* 5%* 3 / 100 = 1200 CI = A - p = 8000-1200. =. 7800

Discussion

29.	Sum of 0 to 9 natural num
Answer» 0+1+2+3+3+4+5+6+7+8+9= 45 here is your ANSWER MATE

Discussion

30.	Difference between physics and maths
Answer» Physics : STUDY of measurement. MATH : Study of calculations Physics : things like electricity, FORCE, machines are taught Maths : METHODS for MAKING calculation easy are taught $.$

Discussion

31.	Find the sum of an AP 1/15,1/12,1/10,............to 11 terms
Answer» The ANS is a+10d 1/15+10*1/60 1/15+1/6 2+5/30 7/30 the 11 TH TERM is 7/30

Discussion

32.	12+35%of 50.=123 × ?
Answer» LET the question mark will be replaced with ( x ) According to the question, => 12 + 35% of 50 = 123 + x $=> 12 + ( \frac{35}{100} \times 50) = 123 \times x \\ \\ \\ => 12 + \frac{35}{2} = 123x \\ \\ \\ => \frac{24 + 35}{2} = 123x \\ \\ \\ = > \frac{59}{2 \times 123} = x \\ \\ \\ = > \frac{59}{<klux>246</klux>} = x$ Hence, question mark will be replaced with 59 / 246

Discussion

33.	How to do complex number in polar form ?
Answer» The polar FORM of a complex number z = a + b i is z = r ( cos θ + i SIN θ ) . So, first FIND the absolute value of . Since , use the formula θ = TAN − 1 ( b a ) .

Discussion

34.	The average age of 3 boys is 15 years. Their ages are in the ratio of 3:5:7. If so the age of the youngest boy is??
Answer» 15x/3 =15 =5x=15 x=3 the YOUNGEST BOY is 3X 3*3=9

Discussion

35.	Is it possible to bend a 20 cm length of wire into the shape of a rectangle with an area 30 cm2?
Answer» Checking : Let the length of rectangle will be ( X ) cm So, Breadth will be ( 20 - x ) cm If area would be 30 cm² Length × breadth = 30 => x( 20 - x ) = 30 => 20X - x² = 30 => x² - 20x + 30 = 0 $\mathbf{this \: \: is \: \: quadratic \: equation \: \: on \: solving \: which \: we \: get}$ => x = 1.6334 or 18.3666 Hence, length or breadth will be 1.6334 On the BASIS of above length or breadth, remaining thing be will be 18.3666 Due to this ACTIVITY, we came to know that it is possible.

Discussion

36.	In what time will rs 8000 will amount to 9261 at 10% per annum compound interest when the interest is compounded halfyearly
Answer» Time PERIOD of 3 YEARS but it ALSO in HALF years in 1\1\2

Discussion

37.	Ratio of 3 numbers is 3:4:5 and sum of their square is 1250. the sum of number is? find answer
Answer» $let \: x \: is \: included \: in \: ratio \: so \: \\ no \: \: are \: \:3x \: 4x \: and.5x \\ aq \: question \: 9{x}^{2} + 16 {x}^{2} + 25 {x}^{2} = 1250 \\ 50 {x}^{2} = 1250 \\ {x }^{2} = 25 \\ x = 5 \\ so \: no \: are \: 75 \: 100 \: and \: 125 \\ sum = 75 + 100 + 125 = 300 \: answer$

Discussion

38.	Rakhi mother is four times as old as rakhi after 15 years her mother will be 3 times as old as she will be then find their present ages
Answer» Very old MOTHER RAKHI is having but HOPE it will HELP u

Discussion

39.	Rachit is four times as old as his son. four years hence the sum of their ages will be 43 years. the present age of the son is? solution
Answer» Let the present age of rachit be X years and his son be y years THEREFORE according to the question case 1 :- x= 4 Y ages 4 years from now will be X + 4 and Y + 4 and case 2:- X + 4 + Y + 4= 43 substituting the value of x from case 1 we get 4y+4+y+4=43 5Y= 43- 8 5y=35 y=7 therefore the present age of son is 7 years

Discussion

40.	Raj sells an article 25% cheaper than sundar and 25% dearer than anand (same article). how much percentage is anand's article cheaper than sundar?
Answer» Let Raj SELLING price be X then: Sundar = 1.25 x Anand = 0.75x Anand's ARTICLE is CHEAPER than Sundar's by : 1.25 - 0.75 = 0.5x 0.5 × 100 = 50%

40.

Raj sells an article 25% cheaper than sundar and 25% dearer than anand (same article). how much percentage is anand's article cheaper than sundar?

Answer»

Let Raj SELLING price be X then:

Sundar = 1.25 x

Anand = 0.75x

Anand's ARTICLE is CHEAPER than Sundar's by :

1.25 - 0.75 = 0.5x

0.5 × 100 = 50%

Discussion

41.	Find two rational no between root 2 and root 3
Answer» We KNOW that root2=1.414 and root3=1.732 so TWO RATIONAL no between these no. will be 1.5 and 1.6

Discussion

42.	100 balls are there 50 are red & 50 are blue put them in 2 jars in such a way that probability of picking a ball is always a red ball.
Answer» 50/100 { because BLUE BALLS are 50 and TOTAL balls are 100 } 1/2

Discussion

43.	In how many ways can 5 apples (identical) be distributed among 4 children? (some children may get no apples.)
Answer» 4 children should get 4 apples and one APPLE should be LEFT BEHIND .

Discussion

44.	Making a number divisible by 10 by multiplying by 2
Answer» HEY........ ......This is your answer 10 Because when 10 is multiplied by 2 =20,which is DIVISIBLE by 10

Discussion

45.	Incomes of a, b c are in the ratio 7:9:12 and their expenditure are in the ratio 8:9:15. if a's saving is 1/4 of his income, then the ratio of savings of a, b and c is
Answer» KAISE YH BH NHI HUA...?

Discussion

46.	A factory produces 3825 meters of a pipe in a day. how many meters of pipe will it produce in the month of july?plzzz urgent
Answer» 3825 X 31 = 118575 METER

Discussion

47.	25% of a number is added to 20, the result is 50% of the number. Then the number is??
Answer» The no. will be 80 OK...

Discussion

48.	average age of a team having 12 players is 23 years. if the age of the coach is also included then the average age increases by 2 years. what is the age (in years) of the coach?
Answer» Total AGE of 12 players = 1223 = 276 when teachers age also included their(13 people) age average become 25 so, now total age become = 1325 = 325 so. teachers age is 325-276 = 49 HOPE it will help U. plz mark is as a BRAINLIST thank u

Discussion

49.	In an election a voter can vote but not more than the no of candidates to be elected if there are 10 candidates out og which 4 are to be elected the how many ways water can be vte aieee ques
Answer» In 4 WAYS VOTER can VOTE

Discussion

50.	In a four-digit number, the sum of the digits in the units place and the tens place is equal to the sum of the digits in the hundreds and the thousands places. the sum of the digits in the tens and hundreds place is three times the sum of the other two digits. if the sum of the digits of the number is more than 20, then the digits in the units place can be
Answer» Let four digit number be 1000a + 100b + 10c + d and x be ONE digit number In a four-digit number, the sum of the DIGITS in the units place and the tens place is equal to the sum of the digits in the hundreds and the thousands places so,c + d = a + b...........(1) the sum of the digits in the tens and hundreds place is three times the sum of the other two digits so,b + c = 3(a + d) c = 3a + 3d - b...........(2) substitute (2) in (1) 3a + 3d - b + d = a + b 3a - a + 4d = b + b 2a + 4d = 2B b = a + 2d..........(3) the sum of the digits of the number is more than 20 so, a + b + c + d >20 ( to eliminate > symbol I introduce a variable x) a + b + c + d = 20 + x..........(4) substitute (1) in (4) a + b + a + b = 20 + x 2a + 2b = 20 + x substitute (3) in (4) 2a + 2(a + 2d) = 20 + x 2a + 2a + 4d = 20 + x 4a + 4d = 20 + x 4d = 20 + x - 4a d = (20 + x - 4a)/4 digit in unit place is d = (20 + x - 4a)/4

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What are the purpoes of data handling in our daily uses

The cost of 20 pens and 17 pencils is rs 418 what is the xost of 60 pens and 51 pencils

Difference between logistic regression and linear classification

Difference between significant figures and significant notation

Slope of a linear regression line is 1.5, and when x is 10 y takes the value of 8. determine the intercept of the regression line.

Sachin walks 7 km west of his house and turned to his left and walked 5 km.then he moves 10 km towards east and then again 3 km west .finally he turns left and wlks 2 km.how far and in which direction is sachin from his house

Rohan is 7th to the left of akshay in a row of boys. vijay, who is 20th from the left end of the row is 7th to the right of akshay. if geet who is 3rd to the right of rohan is 20th from the right end of the row, how many boys are there in the row?

What is the greatest 4 digit number which is divisible by 11,44,66,88 and 99?

Solve: x-4/3+3x-3/35=5x-31/9-x+9/28

Ram is five years elder to his youngest sibling shreya. shreya is two years younger than her brother ritesh. ritesh is 13 years old and is ram's brother. how old will ram be in two years from now?

Ratio between 2 numbers is 5 : 7 and their product is 560.what is the difference between 2 numbers?

Rajiv can do a piece of work in 10 days , venky in 12 days and ravi in 15 days. they all start the work together, but rajiv leaves after 2 days and venky leaves 3 days before the work is completed. in how many days is the work completed ?

Raja bought 10 mobiles for rs.8000. he repaired and sold them at rs.2400 per pair. he made profit of 20% per pair. how much did he spend on repairs totally?

How to write $316.7 million in numbers

1^1 + 3^2 + 5^2 + 7^2 + ......... 25^2 =

A rectangular cubical piece of metal dimensions 2 cm x 3 cm x 4 cm is melted . Some more of the metal is added and it is made into a cube . The cube has integral measures for its sides . What is the minimum amount of metal that is added and what is the size of this cube ?

denominator of a number is 4 less than its numerator if the six added to the numerator it becomes twice the

Prove that (2,-2), (-2,1) and (5,2) are the vertices of right angles triangle. find the area of the triangle and the length of the hypotenuse.

Principal amount is 15320 amount received is 30640 time period is 6 years find the rate of interest

One of the factors of ( 36x^2 - 1 ) + ( 1 + 6x )^2 = ?

If ( x^60 + 60 ) is divided by (x + 1 ),what is the remainder ?

Convert the given second to hours minutes and second using struct in c

Show that pair of linear equations 3x + 4y =7 and 3/4 x +y =4 has no aolution

compute the sum \[\frac{1}{\sqrt{100} + \sqrt{102}} + \frac{1}{\sqrt{102} + \sqrt{104}} + \frac{1}{\sqrt{104}+\sqrt{106}} + \cdots + \frac{1}{\sqrt{9998} + \sqrt{10000}}.\]

Maths questionif a person drinks 8 glasses in a day how much glasses he drinks in a month

15 men or 18 women can complete a piece of work in 45 days. if 5 men and 6 women work together then the work will be completed in

33 men can do a job in 30days. if 44 men startd the job together and after every day of the work , one person leaves .what is the minimum number of days requred to complete the whole work

Ahmed lent Amir Rs 8000 at simple interest for 3 years at the rate of 5% per annum. How much more would he have gained, had he lent it at compound interest?

Sum of 0 to 9 natural num

Difference between physics and maths

Find the sum of an AP 1/15,1/12,1/10,............to 11 terms

12+35%of 50.=123 × ?

How to do complex number in polar form ?

The average age of 3 boys is 15 years. Their ages are in the ratio of 3:5:7. If so the age of the youngest boy is??

Is it possible to bend a 20 cm length of wire into the shape of a rectangle with an area 30 cm2?

In what time will rs 8000 will amount to 9261 at 10% per annum compound interest when the interest is compounded halfyearly

Ratio of 3 numbers is 3:4:5 and sum of their square is 1250. the sum of number is? find answer

Rakhi mother is four times as old as rakhi after 15 years her mother will be 3 times as old as she will be then find their present ages

Rachit is four times as old as his son. four years hence the sum of their ages will be 43 years. the present age of the son is? solution

Raj sells an article 25% cheaper than sundar and 25% dearer than anand (same article). how much percentage is anand's article cheaper than sundar?

Find two rational no between root 2 and root 3

100 balls are there 50 are red & 50 are blue put them in 2 jars in such a way that probability of picking a ball is always a red ball.

In how many ways can 5 apples (identical) be distributed among 4 children? (some children may get no apples.)

Making a number divisible by 10 by multiplying by 2

Incomes of a, b c are in the ratio 7:9:12 and their expenditure are in the ratio 8:9:15. if a's saving is 1/4 of his income, then the ratio of savings of a, b and c is

A factory produces 3825 meters of a pipe in a day. how many meters of pipe will it produce in the month of july?plzzz urgent

25% of a number is added to 20, the result is 50% of the number. Then the number is??

average age of a team having 12 players is 23 years. if the age of the coach is also included then the average age increases by 2 years. what is the age (in years) of the coach?

In an election a voter can vote but not more than the no of candidates to be elected if there are 10 candidates out og which 4 are to be elected the how many ways water can be vte aieee ques