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Aptitude Round Question-Surds and Indices-Free Download

1.

(17)^3.5 x (17)^? = 17⁸

A.

2.29

B.

2.75

C.

4.25

D.

4.5

Answer: Option D

Given that 10^0.48 = x, 10^0.70 = y and x^z = y², then the value of z is close to:

A.

1.45

B.

1.88

C.

2.9

D.

3.7

Answer: Option C

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

A.

25

B.

125

C.

625

D.

1625

Answer: Option A

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

A.

0

B.

2

C.

4

D.

6

Answer: Option C

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