Choose the number which is different from the others.

295

The correct answer is Option (1) → 295

295 is the odd one out.

Reason: sum of digits —

• 295 → 2+9+5 = 16 (not divisible by 3)
• 552 → 5+5+2 = 12 (divisible by 3)
• 729 → 7+2+9 = 18 (divisible by 3)
• 906 → 9+0+6 = 15 (divisible by 3)

So 552, 729 and 906 are divisible by 3, while 295 is not.

Note: The given answer is as per the NTA answer key. However, in odd-one-out questions, multiple valid logical patterns may sometimes exist. In this question, for example, 295 has been identified as different because it is the only number not divisible by 3. However, 729 can also be considered different because it is the only number that is both a perfect square and a perfect cube.