If m and n are whole numbers such that mn = 121, the value of (m - 1)n + 1 is:
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.
Answer: Option B
= (3 + 22) + (3 - 22) - 2
= 4.