Surds and Indices - Arithmetic Aptitude Questions and Answers

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

121

1000

Answer : Option D

Explanation :

We know that 11² = 121.

Putting m = 11 and n = 2, we get:

(m - 1)^{n + 1} = (11 - 1)^{(2 + 1)} = 10³ = 1000.

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