Question
Four number-pairs are given, which of them three are
alike in certain manner and one is different. Choose the different number-pair.Solution
The pattern followed here is: First number is (x)² and second number is (x)⁴. 81: 6561 → (9)² = 81 (9)⁴ = 6561 16: 256→ (4)² = 16 (4)⁴ = 256 121: 14641→ (11)² = 121 (9)⁴ = 14641 4: 16→ (2)² = 4 (2)⁴ = 16
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