If m and n are whole numbers such that mn = 121, the value of (m 1)
n + 1 is:  Choose the correct choice from the following.
A) 1	B) 10	C) 121	D) 100	E) 1000

Rationale: if m and n are whole numbers such that mn = 121 , the value of ( m - 1 ) n + 1 is : a . 1 b . 10 c . 121 d . 1000 sol . - we know that 112 = 121 . putting m = 11 and n = 2 , we get : ( m - 1 ) n + 1 = ( 11 - 1 ) ( 2 + 1 ) = 103 = 1000 . answer : e
Answer: E