What should come in place of ‘?’ in the given series? 64 32 16 8 4 ?
2
Compare each term with the one before it in the series 64, 32, 16, 8, 4.
32 = 64 ÷ 2, 16 = 32 ÷ 2, 8 = 16 ÷ 2 and 4 = 8 ÷ 2. So every term is half of the previous term.
The missing term = 4 ÷ 2 = 2.
Check: the complete series 64, 32, 16, 8, 4, 2 has the same ratio 1 : 2 between every pair of neighbours (2 × 2 = 4, 4 × 2 = 8, …), so 2 fits the pattern.
Hence, 2.
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8 10 13 18 25 ?
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11 13 20 22 29 31 ?
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1 8 17 28 41 ?
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9 14 21 30 41 ?
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2, 5, 11, 23, 44, 77, ?
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A series is given with one term wrong. Select that wrong term from the given alternatives.
J12, M24, P48, S96, U192