Question
21, 32, 45, 60, 75,
96 Find the wrong number in the given number series.Solution
4 × 5 + 1 = 21 5 × 6 + 2 = 32 6 × 7 + 3 = 45 7 × 8 + 4 = 60 8 × 9 + 5 = 77 9 × 10 + 6 = 96 Therefore, 77 should come in place of 75.
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