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Can you find the fifth term in the following series?

77, 49, 36, 18, ...
Dec 22nd, 2014

Each term consists of the first digit of the preceding term multiplied by the second digit of the same term. Thus,

49=7x7

36=4x9

18=3x6

Hence, the fifth term is 1 x 8 = 8.

Dec 22nd, 2014

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