Q. Let’s read it carefully and spot the odd pair. Options: A) 25 – 49 B) 12 – 16 C) 24 – 36 D) 36 – 81

 Q. Let’s read it carefully and spot the odd pair.

Options:
A) 25 – 49
B) 12 – 16
C) 24 – 36
D) 36 – 81

Hidden relationship

Check the sum of digits of the first number and then square it:

• A) 25 → 2 + 5 = 7 → $7^2 = 49$ ✅

• B) 12 → 1 + 2 = 3 → $3^2 = 9$ ❌ (but given 16)

• C) 24 → 2 + 4 = 6 → $6^2 = 36$ ✅

• D) 36 → 3 + 6 = 9 → $9^2 = 81$ ✅

✅ Correct Answer:

B) 12 – 16