Question

Find the odd one among the following :

• A. 143
• B. 168
• C. 225
• D. 195

Answer 1

The Correct Option is C

To identify the odd one out among the given numbers: 143, 168, 225, and 195, we need to examine the properties of each number to find a distinguishing factor.

1. Let's analyze if these numbers can be expressed in terms of basic mathematical properties or patterns, such as divisibility, sum of digits, or perfect squares.
2. Check if any of these numbers are perfect squares, as that could distinguish one number from the others.
3. Evaluate each number:
   • 143: Not a perfect square. The closest perfect squares are 121 (11^2) and 144 (12^2).
   • 168: Not a perfect square. The nearest perfect squares are 144 (12^2) and 169 (13^2).
   • 225: A perfect square. It is 15^2.
   • 195: Not a perfect square. The nearest perfect squares are 169 (13^2) and 196 (14^2).
4. Since 225 is the only number that is a perfect square, it stands out from the others.

Conclusion: The odd one out is 225 because it is the only perfect square among the given numbers.