If m and n are whole numbers such that m " = 121, then the value of (m-1)n+1 is :
A
1
B
10
C
121
D
1000
Correct Answer: 1000
mn = 121 = (11)2 ∴ m = 11;n = 2 ∴ (m - 1)n + 1 = (11 - 1)2 + 1 = 103 = 1000