332354 + Interview Questions in Secondary School in Math

1.	Find :1. (a+b) (a+b)2. (a+b) (a+b) (a+b)3. ( a-b) (a-b) (a-b) by using the result of part 2
Answer» $(a + b) \: (a + b) = {(a + b)}^{2}$ $= {a}^{2} + 2ab + {b}^{2}$ The same WAY you have to SOLVE the OTHERS

Discussion

2.	39 is a factor of 13962
Answer» Yes,39 is the FACTOR of 13962 because 13962÷39=358 hope it HELPS you PLEASE MARK me as BRAINLIEST

Discussion

3.	If x,y,z be the digit of a number begining from the left, the number is
Answer» Z y X will be your ANSWER

Discussion

4.	Show that the angle of an equilateral triangle are 60°each.
Answer» HEYA MATE, $we \: know \: that \: in \: equilateral \: triangle \\ All \: angles \: are \: equal. \\ and \: also \\ Sum \: of \: all \: angles \: of \: a \: triangle \: = 180 \\ let \: all \: angles \: be \: x \: . \\ so \\ x + x + x = 180 \\ 3x = 180 \\ x = 60 \\ hence \: proved.$ HOPE it will HELP you #KEVIN

Discussion

5.	Please solve these asap
Answer» MAKE me brainlist...... QUESTION no SECOND wrong because sinA/2 need in question but here sinA is WRITTEN

Discussion

6.	36 9 254 49 925 64 36 9 ? 8
Answer» I THINK the ANSWER is 98

Discussion

7.	Lim x aproaches 0 underroot 1-4x/x
Answer» APPLY L HOSPITAL rule Lt X approaches 0 1-4x/x apply DERIVATIVE on numerator and DENOMINATOR 0-4/1== -4

Discussion

8.	What is the hcf of smallest prime no. and smallest comlosite no.
Answer» SMALLEST PRIME no. 2 smallest COMPOSITE no. 3 hcf = 1

8.

What is the hcf of smallest prime no. and smallest comlosite no.

Answer»

SMALLEST PRIME no. 2

smallest COMPOSITE no. 3

hcf = 1

Discussion

9.	If 2 is a zero of the polynomial P of x is equal to 2 x square - 3 x + 7a find the value of a
Answer» $hey \: mate \: here \: is \: your \: answer...$ $2 {x}^{2} - 3x + 7a = 0$ $\: \: \: on \: putting \: x = 2$ $2(2) {}^{2} - 3(2) + 7a = 0$ $2(4) - 3(2) + 7a = 0$ $8 - 6 + 7a = 0$ $2 + 7a = 0$ $7a = - 2$ $a = \frac{ - 2}{7}$ $the \: value \: of \: a \: is \: \frac{ - 2}{7}$ $hope \: it \: helps.....$

Discussion

10.	The sum of the squares of two consecutive odd positive integers is 394. Find them
Answer» LET the two NUMBERS are X and(x+2) ACCORDING to the question (x) ^2+(x+2)^2=394 =>x^2+x^2+4x+4=394 =>2(x)^2+4x+4-394=0 =>2(x)^2+4x-390=0 =>2(x)^2+30x-26x-390=0 =>2x(x+15)-26(x+15)=0 =>(x+15)(2x-26)=0 =>x+15=0 or 2x-26=0 =>x= -15 orx=26/2=13 if x= -15,then x+2= -13 or ifx=13,thenx+2=15

Discussion

11.	36/100 1/11 find decimal experssion
Answer» HEY FRIEND HeRe is YoUR ANSWER :- 36/100= 0.36 1/11 =0.090 HOPE mY anSwEr wILL HELP yOu

Discussion

12.	the values of k for which the quadratic equation x² - 2 kx +5x =0 has equal roots are ... options (a) 0 only (b) 5 only (c) 0,5 (d)0,6
Answer» 0 only is the answer Option a

Discussion

13.	Class 9 MathsQ.Evaluate after rationalising the denominator of ,it being given that √5 =2.236 and √10= 3.162Source:CBSE Paper 2011
Answer» Your ANSWER is - 9.54

Discussion

14.	Hello friends, tell me if x+y+z=0 then prove that x³ +y³+z³=3xyz
Answer» HELLO FRIEND here's ur answer ◆●◆x^3+y^3+z^3-3xyz= (x+y+z)* (x^2+y^2+z^2-xy-xz-yz)+ 3xyz because you say that● x+y+z=0 ●then THEREFORE ◆●◆x^3+y^3+z^3-3xyz= (0)*(x^2+y^2+z^2-xy-xz-yz) =0 and thus•••,x^3+y^3+z^3=3xyz••

Discussion

15.	12723 warm up exercises
Answer» What do you MEAN by that??

Discussion

16.	out of two numbers,40% of the greater number is equal to 60% of the smaller. if the sun ofthe numbers is 150. then tje greater number is?
Answer» The GREATER NUMBER Is 12

Discussion

17.	+ Y + Z is equal to zero show that x cube + y cube + Z cube is equal to 3 x y z
Answer» Here is your ANSWER... HOPE this HELPS you...

Discussion

18.	Cp=15000,sp=12000,p=?
Answer» It is LOSS.... not PROFIT...

Discussion

19.	One of the factors of x^5+x+1 is. :(i)2x^2-x-1. (2)x^3-x^2+1. (3)x^2-2x^2+1. (4)x^3+x^2+1
Answer» Here is UR answer!! We can solve this PROBLEM by undetermined coefficient method. Please expand this, ➡️ (x^2+ax+b) (x^3+cx^2+dx+e)= And we get, ➡️ x^5 = +ax^4+cx^4 = +acc^3+bx^3+dx^3 = +adx^2+bcx^2+ex^2 = +eax+bdx = +eb Actually those above are already grouped by the similar degree, then we can arrange the simultaneous Eq, by the similar coeff, like this below, ⬇️⬇️⬇️ a+c=0 ac+b+d=0 ad+bc+e=0 ae+bd=1 eb=1 In this case i assume you can solve those SIM. Lin. Eq, five unknown var, and 5 equation. Then we get, ➡️ a=1, b=1, c=-1, d=0 and e=-1 ⏩ (x^2+x+1) (x^3-x^2+1) ➡️ is the factorization So, the answer is (ii) x^3-x^2+1 ✔️ Have fun Faithfully yours, DivaSept (If you STILL didn't understand, you can ask more in the other uploading QUESTION) May be usefull ^_^

Discussion

20.	The difference between two positive integers is 13 and their product is 140. Find the two integers
Answer» LET first number be x Second number be y ATQ. X-Y=13 AND X. Y=140 X=13+Y - - - - - - - - 1 By SUBSTITUTING the value of X X. Y=140 (13+Y).Y=140 13Y+Y.Y =140 Y.Y+13Y-140=0 Y.Y+20Y-7Y-140=0 Y(Y+20)-7(Y+20)=0 (y-7)(y+20)=0 By PUTTING them equals to zero, we will get Y=7and Y=-20(N. A) not applicable By putting value of Y=7 in EQUATION 1,we will get X=13+Y X=13+7 X=20

Discussion

21.	The sides of a rectangular field are in ratio 9 :7 and it's perimeter is 144 meters Find the sides
Answer» SORRY my ANSWER is WRONG some MISTAKE are their in my answer

Discussion

22.	If x+1/x = 4 find x4 - 1/x3
Answer» SOLUTION $\frac{x + 1 }{4 } = 4\\ \\ x + 1 = 4x \\\\ x - 4x = -1\\ \\ -3x = -1 \ OR \ 3x = 1 \\\\ x = \frac{1}{3}$ Now we have to find the value of $x^{4} - \frac{1}{x^{3}} \\\\ Putting \ the \ value \ of \ x = \frac{1}{3} \\\\ x^{4} - \frac{1}{x^{3}} = (\frac{1}{3} )^{\frac{1}{3}} - \frac{1}{(\frac{1}{3})^{3}} \\\\ (\frac{1}{3} )^{\frac{1}{3}} - 3^3 \ .................................... ( \frac{1}{(\frac{1}{3})^{3}} = 3^3 ) \\\\ \frac{1}{81} - 27 \\\\ - \frac{2186}{81} \ or \ - 26 \frac{80}{81} \ ............................ \ Ans$ ◼◼◼ _____________________________________________ Still any PROBLEM N understanding the solution , please ASK in the comments section.

22.

If x+1/x = 4 find x4 - 1/x3

Answer»

SOLUTION

$\frac{x + 1 }{4 } = 4\\ \\ x + 1 = 4x \\\\ x - 4x = -1\\ \\ -3x = -1 \ OR \ 3x = 1 \\\\ x = \frac{1}{3}$

Now we have to find the value of

$x^{4} - \frac{1}{x^{3}} \\\\ Putting \ the \ value \ of \ x = \frac{1}{3} \\\\ x^{4} - \frac{1}{x^{3}} = (\frac{1}{3} )^{\frac{1}{3}} - \frac{1}{(\frac{1}{3})^{3}} \\\\ (\frac{1}{3} )^{\frac{1}{3}} - 3^3 \ .................................... ( \frac{1}{(\frac{1}{3})^{3}} = 3^3 ) \\\\ \frac{1}{81} - 27 \\\\ - \frac{2186}{81} \ or \ - 26 \frac{80}{81} \ ............................ \ Ans$

◼◼◼

_____________________________________________

Still any PROBLEM N understanding the solution , please ASK in the comments section.

Discussion

23.	Lapika reads a book for 1 3/4 hours everyday. She reads the entire book in 6 days. How many hours in all were required by her to read the book?
Answer» 3.25 HR PER day 3.25x6 = 19.5 hr

Discussion

24.	Determine the two numbers nearest to 10000 which are exactly divisible by each of 2 3 4 5 6 and 7
Answer» Solution: Step 1: Take the LCM of given numbers. LCM of (1, 2, 3, 4, 5, 6 and 7 ) = 420 Step 2: Divide 10000 by 420, in which the value COMES nearest to 10000 When 420 is divided by 23, it gives a REMAINDER of 340 Step 3: Subtract 340 from 10000 = 10000 - 340 = 9660 Therefore, 9660 is the FIRST number which is nearest to 10000 and divisible by 1, 2, 3, 4, 5, 6 and 7. Step 4: Multiply 420 by 24 to get the second nearest number 420 * 24 = 10080 Therefore, the two numbers are 9660 and 10080 THANK YOU

Discussion

25.	Solve by substitution method2x + 3y = 0 ( Solve for x and Y)3x + 4y = 5
Answer» Hey!!! Good Evening Difficulty Level : Above Average Chances of being asked in Board : 60% _____________________ We have 2x + 3y = 0 => 2x = - 3y => x = - 3y/2 -------(1) We have , 3X + 4Y = 5 Substituting (1) in above equation => 3(-3y/2) + 4y = 5 => - 9y/2 + 4y = 5 => ( - 9y + 8y ) / 2 = 5 => - y = 10 => y = - 10 <<<<<<< Answer Using y in (1) => x = - 3(-10)/2 => x = 15 <<<<<<<<< Answer _________________ Hope this HELPS ✌️ Good Night

Discussion

26.	By selling an article for Rs.240,a man gains 20 percent.Find the cp
Answer» Here is your ANSWER...... CP = SP - Profit CP = 240 - 20 = 220 CP = 220 Hope its help you.... Please MARK me as a Brainlist

Discussion

27.	In a triangle ABC, if 2 angle a=3 angle b=6 angle c,determine angle A
Answer» Step-by-step explanation: ACCORDING to the CONDITION in the △ABC, 2∠A=3∠B=6∠C ⇒∠A=3∠C and, ∠B=2∠C Sum of interior ANGLES of the triangle is 180 o Hence ∠A+∠B+∠C=180 o ⇒3∠C+2∠C+∠C=180 o ⇒∠C=30 o ∴∠A=90 0 ,∠B=60 o ,∠C=30 o

27.

In a triangle ABC, if 2 angle a=3 angle b=6 angle c,determine angle A

Answer»

Step-by-step explanation:

ACCORDING to the CONDITION in the △ABC, 2∠A=3∠B=6∠C

⇒∠A=3∠C and, ∠B=2∠C

Sum of interior ANGLES of the triangle is 180

o

Hence ∠A+∠B+∠C=180

o

⇒3∠C+2∠C+∠C=180

o

⇒∠C=30

o

∴∠A=90

0

,∠B=60

o

,∠C=30

o

Discussion

28.	If the supplement of an angle is two third of itself. determine the angle and its supplement.
Answer» HOPE it HELP u plz MARK as a BRAINLIEST

28.

If the supplement of an angle is two third of itself. determine the angle and its supplement.

Answer»

HOPE it HELP u

plz MARK as a BRAINLIEST

Discussion

29.	Simplyfy root 28 + root 98 + root 147
Answer» HEYA !! ✓28 + ✓98 + ✓147 => ✓2 × 2 × 7 + ✓2 × 7 × 7 + ✓ 3 × 7 × 7 => 2✓7 + 7✓2 + 7✓3 [ Answer ]

Discussion

30.	Write a Pythagorean triplet whose smallest number is 8
Answer» Here m will be 4 ( 2m = 8, m= 4) After that...2m + 1 = 2×4+1= 9... And 2m-1= 7... So, the triplet is 7,8 and 9... Hope it HELP$ ...

Discussion

31.	The organiser of an essay competition decides that a winner in the competition gets a price of ₹100 and a participant who does not win get a price of rupees 25 . The total prize money distributed is ₹3000. find the number of winners ,if the total number of participants is 63.
Answer» The NUMBER of WINNERS in this ESSAY ORGANISATION =19

Discussion

32.	What is the HCF of the smallest prime number and the smallest composite number
Answer» H C F smallest prime no 2 COMPOSITE no 4. hence hcf 4

Discussion

33.	Is this a adjacent angle
Answer» No this is not an ADJACENT ANGLE

Discussion

34.	Answer it i will make brainlis.t fast
Answer» Monocot ,MAIZE,apple,CHILLI,WHEAT, MUSTARD,GRASS,mango,barley

Discussion

35.	50 men mow 32 hectares of land in 3days. How many days will 15 men take to mow it
Answer» 50 men can do in 3 days 1 MAN do in 3×50=150 days 15 men will do WORK in 150/15=10 days So the ANSWER is 10 days

Discussion

36.	Find (k) if number solution 3x+ y =1 (2k-1)k+(k-)y=2k+1
Answer» 15 is the VALUE of K

Discussion

37.	Verify that x³+y³+z³-3xyz=1/2(x+y+z)(x-y)²+(y-z)²+(z-x)²
Answer» HOPE it is HELPFUL to U

Discussion

38.	Consuder the number 4n where n is a natural number . check where there is any value of n for which 4^n ends with the digit zero
Answer» HOPE it HELPS you. . . . FOLLOW me. . . . . MARK as a BRAINLIST. . . .

Discussion

39.	What 0.7 as fraction ?
Answer» Hii 0.7=7/10 is Your ANSWER

Discussion

40.	Find the least number which 7688 should be multiplied so the ruselt is perfect square
Answer» By FACTORISE method = 7688= 2x2x2x31x31 We will make PAIR so 2x2=2pair 31x31=31pair So we need 2 for perfect squre We will MULTIPLE 7688x2 so 15376 and 15376 is perfrct square of 124 So the answer = 2 If my answer is right si please GIVE me BRAINIEST answer please please

Discussion

41.	in a stack there are five books each of thickness 20 mm and 5 paper sheet each of thickness 0.016 mm what is the total thickness of the stack
Answer» 5 BOOKS thickness=100mm 5 PAPER sheets=0.016 mm Total thickness=100+0.016 =100.016 Hopefully this HELPS it wasnt too HARD :D

41.

in a stack there are five books each of thickness 20 mm and 5 paper sheet each of thickness 0.016 mm what is the total thickness of the stack

Answer»

5 BOOKS thickness=100mm

5 PAPER sheets=0.016 mm

Total thickness=100+0.016

=100.016

Hopefully this HELPS it wasnt too HARD :D

Discussion

42.	Factorise x3 + 13 x2 + 32x + 20
Answer» X^3 + 13x^2 + 32x + 20 = x^3 + x^2 + 12x^2 + 12x + 20X + 20 = x^2 ( x + 1) +12x ( x + 1) + 20(x +1) = (x+1)(x^2 + 12x + 20 = ( x + 1 ) [ x^2 + 10X + 2X + 20] = (x+1) [ x(x+10) + 2 (x+10)] = (x+1)(x+2)(x+10)

Discussion

43.	the ratio of two sides of a parllelogram is 3:5and its parimeter is 48m find the sides of the parallelogram
Answer» ANS.- sides of a paralleogram are 9 & 15 CM

43.

the ratio of two sides of a parllelogram is 3:5and its parimeter is 48m find the sides of the parallelogram

Answer»

ANS.-

sides of a paralleogram are 9 & 15 CM

Discussion

44.	in a class test containing 10 question 5 marks are awarded for every correct answer and minus 2 marks are added for every in correct answer and 0 for question not attempted Mohan get for correct and 6 in correct answer what is his score
Answer» No of CORRECT ANSWER of mohan=5 no of INCORRECT answer ofohan=2×6=12 mohans score=12+5=17

Discussion

45.	A number says z is exactly the four times the sum of its digits and twice thr product of the digits. find the number
Answer» The ANSWER is 36. 3+6=9 (9)(4)=36.........(1) PRODUCT of 2 DIGITS (3)(6)=18 (18)(2)=36...........(2) ...(1)=...(2)=36

Discussion

46.	Express 7312 gm into kg hg mg dg
Answer» 7.31200kg 73.12 hg 7312000 mg 73120dg

Discussion

47.	3-under root 5 divided by 3+under root 5
Answer» ʜᴇʏ ᴍᴀᴛᴇ!! ʜᴇʀᴇ's ᴜʀ ᴀɴsᴡᴇʀ :-) _____________________, ʀᴇғᴇʀ ᴛᴏ ᴛʜᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛ ᴀʙᴏᴠᴇ⬆️⬆️⬆️ ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ☺️☺️☺️

Discussion

48.	Trignometry is easy or integration?
Answer» OBVIOUSLY it’s TRIGONOMETRY

Discussion

49.	Hcf and lcm of 17,23and 37 by prime factorization method
Answer» HOPE my ANSWER HELPS you☺ # Be Brainly✌

Discussion

50.	Verify if the following polynomials are zeros of the polynomials indicated against themP(x)=3x+1,x=-1/3
Answer» HENCE VERIFIED...............................................

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Find :1. (a+b) (a+b)2. (a+b) (a+b) (a+b)3. ( a-b) (a-b) (a-b) by using the result of part 2

39 is a factor of 13962

If x,y,z be the digit of a number begining from the left, the number is

Show that the angle of an equilateral triangle are 60°each.

Please solve these asap

36 9 254 49 925 64 36 9 ? 8

Lim x aproaches 0 underroot 1-4x/x

What is the hcf of smallest prime no. and smallest comlosite no.

If 2 is a zero of the polynomial P of x is equal to 2 x square - 3 x + 7a find the value of a

The sum of the squares of two consecutive odd positive integers is 394. Find them

36/100 1/11 find decimal experssion

the values of k for which the quadratic equation x² - 2 kx +5x =0 has equal roots are ... options (a) 0 only (b) 5 only (c) 0,5 (d)0,6

Class 9 MathsQ.Evaluate after rationalising the denominator of ,it being given that √5 =2.236 and √10= 3.162Source:CBSE Paper 2011

Hello friends, tell me if x+y+z=0 then prove that x³ +y³+z³=3xyz

12723 warm up exercises

out of two numbers,40% of the greater number is equal to 60% of the smaller. if the sun ofthe numbers is 150. then tje greater number is?

+ Y + Z is equal to zero show that x cube + y cube + Z cube is equal to 3 x y z

Cp=15000,sp=12000,p=?

One of the factors of x^5+x+1 is. :(i)2x^2-x-1. (2)x^3-x^2+1. (3)x^2-2x^2+1. (4)x^3+x^2+1

The difference between two positive integers is 13 and their product is 140. Find the two integers

The sides of a rectangular field are in ratio 9 :7 and it's perimeter is 144 meters Find the sides

If x+1/x = 4 find x4 - 1/x3

Lapika reads a book for 1 3/4 hours everyday. She reads the entire book in 6 days. How many hours in all were required by her to read the book?

Determine the two numbers nearest to 10000 which are exactly divisible by each of 2 3 4 5 6 and 7

Solve by substitution method2x + 3y = 0 ( Solve for x and Y)3x + 4y = 5

By selling an article for Rs.240,a man gains 20 percent.Find the cp

In a triangle ABC, if 2 angle a=3 angle b=6 angle c,determine angle A

If the supplement of an angle is two third of itself. determine the angle and its supplement.

Simplyfy root 28 + root 98 + root 147

Write a Pythagorean triplet whose smallest number is 8

The organiser of an essay competition decides that a winner in the competition gets a price of ₹100 and a participant who does not win get a price of rupees 25 . The total prize money distributed is ₹3000. find the number of winners ,if the total number of participants is 63.

What is the HCF of the smallest prime number and the smallest composite number

Is this a adjacent angle

Answer it i will make brainlis.t fast

50 men mow 32 hectares of land in 3days. How many days will 15 men take to mow it

Find (k) if number solution 3x+ y =1 (2k-1)k+(k-)y=2k+1

Verify that x³+y³+z³-3xyz=1/2(x+y+z)(x-y)²+(y-z)²+(z-x)²

Consuder the number 4n where n is a natural number . check where there is any value of n for which 4^n ends with the digit zero

What 0.7 as fraction ?

Find the least number which 7688 should be multiplied so the ruselt is perfect square

in a stack there are five books each of thickness 20 mm and 5 paper sheet each of thickness 0.016 mm what is the total thickness of the stack

Factorise x3 + 13 x2 + 32x + 20

the ratio of two sides of a parllelogram is 3:5and its parimeter is 48m find the sides of the parallelogram

in a class test containing 10 question 5 marks are awarded for every correct answer and minus 2 marks are added for every in correct answer and 0 for question not attempted Mohan get for correct and 6 in correct answer what is his score

A number says z is exactly the four times the sum of its digits and twice thr product of the digits. find the number

Express 7312 gm into kg hg mg dg

3-under root 5 divided by 3+under root 5

Trignometry is easy or integration?

Hcf and lcm of 17,23and 37 by prime factorization method

Verify if the following polynomials are zeros of the polynomials indicated against themP(x)=3x+1,x=-1/3