Question
What number should come next?
61 57 50 61 43 36 61
61 57 50 61 43 36 61
Answer: Option E
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This is an alternating repetition series, in
which a random number, 61, is interpolated
as every third number into an otherwise
simple subtraction series. Starting with the
second number, 57, each number (except
61) is 7 less than the previous number.
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