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Question

Look carefully for the pattern, and then choose which pair of numbers comes next.

61 57 50 61 43 36 61

Options:
A .  29 61
B .  27 20
C .  31 61
D .  22 15
E .  29 22
Answer: Option E
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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