Odd Man Out and Series - General Aptitude

Q1:

1, 4, 9, 16, 25, 36, 49, (....)

A 54

B 56

C 64

D 81

ANS:C - 64

Numbers are 12, 22, 32, 42, 52, 62, 72. So, the next number is 82 = 64.