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The diagram and the numbers/letters follow certain principle. Select the missing number/ letter indicated by question mark? 6, 7, 10, 8, 16, 15, 26, 23, 42, 38, 68, ___? (A) 61 (B) 80 (C) 106 (D) 120 |
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Answer» (A) 61 Sol: 6, 10, 16, 26, 42 68 7 8 15 23 38 7 + 8 = 15 8 + 15 = 23 15 + 23 = 38 23 + 38 = 61 |
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