Question
8, 25, 78, 239,
? In each of the following questions, a letter-number series is given with one or more terms missing as shown by (?). Choose the missing term out of the given alternatives.Solution
8 x 3 + 1 = 25 25 x 3 + 3 = 78 78 x 3 + 5 = 239 239 x 3 + 7 = 724
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