100+ Surds and Indices Aptitude Questions and Answers - 1

Question: 1

[4³ × 5⁴] ÷ 4⁵ = ?

(A) 39.0625

(B) 35.6015

(C) 30.0925

(D) 29.0825

Question: 2

(10)²⁴ × (10)^-21 = ?

(A) 10

(B) 100

(C) 1000

(D) 10000

Question: 3

If 5^a = 3125, then the value of 5^{1 - 3} is

(A) 15

(B) 25

(C) 125

(D) 625

Question: 4

If m and n are whole numbers such that mⁿ = 121, then the value of (m – 1)^{n + 1} is

(A) 1

(B) 10

(C) 100

(D) 1000

Question: 5

5⁰ × 8 = ?

(B) 5

(C) 8

(D) 40