Four number-pairs have been given, out of which three are alike in som

1.	Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.1. 324 : 642. 169 : 163. 289 : 644. 256 : 49
Answer» Correct Answer - Option 1 : 324 : 64 By checking options: (1) 324 : 64 → \(\sqrt{324} = 18 \to 1 + 8 = 9 \to 9^2 = 81 \neq 64\) (2) 169 : 16 → \(\sqrt{169} = 13 \to 1 + 3 = 4 \to 4^2 = 16\) (3) 289 : 64 → \(\sqrt{289} = 17 \to 1 + 7 = 8 \to 8^2 = 64\) (4) 256 : 49 → \(\sqrt{256} = 16 \to 1 + 6 = 7 \to 7^2 = 49\) Hence, 324 : 64 is the odd one out.

Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.1. 324 : 642. 169 : 163. 289 : 644. 256 : 49

Answer» Correct Answer - Option 1 : 324 : 64

By checking options:

(1) 324 : 64 → \(\sqrt{324} = 18 \to 1 + 8 = 9 \to 9^2 = 81 \neq 64\)

(2) 169 : 16 → \(\sqrt{169} = 13 \to 1 + 3 = 4 \to 4^2 = 16\)

(3) 289 : 64 → \(\sqrt{289} = 17 \to 1 + 7 = 8 \to 8^2 = 64\)

(4) 256 : 49 → \(\sqrt{256} = 16 \to 1 + 6 = 7 \to 7^2 = 49\)

Hence, 324 : 64 is the odd one out.