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Algebra Questions and Answers for Competitive Exams

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Important Algebra Questions and Answers

Q :  

Sum of the factors of 4b2c2-(b2+c2-a2)2 is : 

(A) 0

(B) 1

(C) a+b+c

(D) 2(a+b+c)

Correct Answer : D

Q :  

If a+b+c=15 and a2+b2+c2=83 then the value of a3+b3+c3-3abc

(A) 190

(B) 210

(C) 200

(D) 180

Correct Answer : D

Q :  

If a-b=1 and a3-b3=61, then the value of ab will be 

(A) 30

(B) 60

(C) -20

(D) 20

Correct Answer : D

Q :  

If x = a - b, y = b - c, z = c - a, then the numerical value of the algebraic expression x3 +y3 + z3 -3xyz will be 

(A) 4 (a+b+c)

(B) 3 abc

(C) a + b + c

(D) 0

Correct Answer : D

Q :  

If p=99, then the value of p(p2+3p+3) will be

(A) 1000001

(B) 999998

(C) 999999

(D) 1000000

Correct Answer : C

Q :  

If a=34, b=c=33, then the value of a3+b3+c3-3abc is 

(A) 50

(B) 100

(C) 0

(D) 111

Correct Answer : B

Q :  

If a\b + b\a =1, then the value of a3+b3 will be 

(A) -1

(B) 2

(C) 1

(D) 0

Correct Answer : D

Q :  

If a+b = 1 and a3+b3+3ab=k, then the value of k is : 

(A) 5

(B) 7

(C) 1

(D) 3

Correct Answer : C

Q :  

What will be the value of x3+y3+z3-3xyz when x+y+z=9 and x2+y2+z2=31?

(A) 54

(B) 9

(C) 27

(D) 3

Correct Answer : A

Q :  

If , then the value of x

(A)

(B) 2

(C) 1

(D) 0

Correct Answer : D

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