Logical Reasoning :: Number Series
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much
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Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?
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Look at this series: 22, 21, 23, 22, 24, 23, ... What number should come next?
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Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next?
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Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next?