Aptitude:: Surds and Indices

@ : Home > Aptitude > Surds and Indices > General Question
11 

If 3(x - y) = 27 and 3(x + y) = 243, then x is equal to:

A. 0 B. 2
C. 4 D. 6

12 

If 5a = 3125, then the value of 5(a - 3) is:

A. 25 B. 125
C. 625 D. 1625

13 

Given that 100.48= x, 100.70 = y and xz = y2, then the value of z is close to:

A. 1.45 B. 1.88
C. 2.9 D. 3.7

14 

then the value of x is:

A. B. 1
C. 2 D.

15 

(17)3.5 x (17)? = 178

A. 2.29 B. 2.75
C. 4.25 D. 4.5

Page 3 of 3