Question
Three of the following four number-pairs are alike in a
certain way and one is different. Find the odd one out.Solution
1. 18 : 323 → (18 x 18) – 1 = 323 2. 9 : 82→ (9 x 9) + 1 = 82 3. 21 : 442 → (21 x 21) + 1 = 442 4. 16 : 65 → (16 x 16) + 1 = 257
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