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Look at this series: 8, 22, 8, 28, 8, . . . What number should come next?
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This is a simple addition series with a random number, 8, interpolated as every other number.In the series, 6 is added to each number except 8, to arrive at the next number.
Look at this series: 5.2, 4.8, 4.4, 4, . . . What number should come next?
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This is a simple subtraction series:Each number decreases by 0.4.
Look at this series: 58, 52, 46, 40, 34, . . . What number should come next?
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Look at this series: 80, 10, 70, 15, 60, . . . What number should come next?
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This is an alternating addition and subtraction series:In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.
Look at this series: 21, 9, 21, 11, 21, 13, . . . What number should come next?
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In this alternating repetition series: The random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.