Examntra | Quiz

Quizes

Q.No. 1  
 If x + 1 = 1, then the value of x2 + 3x + 1 is
x x2 + 7x + 1
A. 2
B. 0
C. ½
D. 1
Q.No. 2  

If a + b + c = 0, find the value of

1 + 1 + 1 + 1 + 1 + 1
a3 b3 c3 (a + b)3 (b + c)3 (c + a)3
A. 3abc
B. 1
C. 0
D. -1
Q.No. 3  

 

If x + y = 4 and 1+1= 4, then the value of x3 + y3 is xy

A. 64
B. 4
C. 25
D. 52
Q.No. 4  

Given that a + b + c = 2 and ab + bc + ca = 1, then the value of (a + b)2 + (b + c)2 + (c + a)2 is

A. 16
B. 6
C. 8
D. 10
Q.No. 5  

(a2 + 2a)2 + 12(a2 + 2a) – 45 can be expressed as

A. (a – 1)(a + 3)(a2 + 2a + 15)
B. (a + 1)(a + 3)(a2 + 2a + 15)
C. (a + 1)(a – 3)(a2 + 2a + 15)
D. (a – 1)(a – 3)(a2 + 2a + 15)
Q.No. 6  

If 3(a2 + b2 + c2) = (a + b + c)2, then the relation between a, b, c is

A. a = b = c
B. a = b ≠ c
C. a = b ≠ c
D. a > b > c
Q.No. 7  

If a = 2.234, b = 3.121 and c = -5.355, then the value of a3 + b3 + c3 – 3abc is

A. -1
B. 0
C. 1
D. 2
Q.No. 8  

The equations 3x + 4y = 10 and – x + 2y = 0 have the solution (a, b). The value of a + b is

A. 1
B. 2
C. 3
D. 4
Q.No. 9  

If 999x + 888y = 1332 and 888x + 999y = 555, then x2 – y2 is equal to

A. 7
B. 8
C. 9
D. 5
Q.No. 10  

If a – b = 4, and a2 + b2 = 40 where a and b are positive integers, then a3 + b6 is equal to

A. 264
B. 280
C. 300
D. 324