# Which number is wrong in the given series?

Which number is wrong in the given series?

225, 169, 144, 100, 64, 48

(a) 225

(b) 144

(c) 64

(d) 48

**Answer: (d) 48 **

**Explanation:-**

225 is a perfect square of 15,

169 is a perfect square of 13,

144 is a perfect square of 12,

100 is a perfect square of 10,

64 is a perfect square of 8

**48 is not a perfect square of any number. **

Then, the odd number is 48.

Hence, the correct answer is option (d) 48.