Number Series Explanation 3 - Alternating Pattern

All Aptitude Tests Number Series Number Series explanation Alternating Pattern

Example 2

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A: 30 B: 32 C: 38 D: 40

It is immediately clear that there cannot be a monotonous or exponential relationship, because the numbers are not continuously increasing or decreasing. It is probable that the transformations are *3, then +9 and then /3.

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The answer appears to be 36. However, with this type of exercise, you will sometimes see that the obvious answer is not among the possible answers. It is of course also possible that (for example) the following pattern applies.

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In this case, the answer is 40. It is therefore important to look carefully at the possible answers.

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