Verbal Reasoning →Series Completion → Number Series→Question : 52

Find the missing term in the following series:
563, 647, 479, 815, ?
[A]672
[B]386
[C]279
[D]143

143
In the above question, the pattern is + 84, – 168, + 336, …………… i.e. + 84, (84 x 2), + ( 84 x 2²),…………. So, missing term = 815 – ( 84 x 2³) = 815 – 672 = 143

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