Out of the four numbers listed, three are alike in some manner and one is different. Select the odd one.

118, 146, 182, 226

Given: 118, 146, 182, 226

Logic: All numbers are multiples of a single prime number except 182, which is a multiple of two prime numbers (7 × 13), making it the odd one out.

118 = 2 × 59 (Multiple of prime 59)
146 = 2 × 73 (Multiple of prime 73)
182 = 2 × 91 (91 is not a prime, as 91 = 7 × 13)
226 = 2 × 113 (Multiple of prime 113)
Odd One Out: Since 182 is the only number that is not a multiple of a single prime number, it is the odd one out.
Thus, the correct option is (a) 182