Question
Find the wrong number in given number series.
1687, 1666, 1618, 1549, 1457, 1342.Solution
Here series follows the pattern- 1687-23 = 1664 1664-2×23 = 1618 1618-3×23 = 1549 1549-4×23 = 1457 1457-5×23 = 1342
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