Number Series Explanation 3 - Alternating Pattern

All Aptitude Tests Number Series Number Series explanation Alternating Pattern

Example 1

Alternating_Example_1.png

It is immediately clear that there cannot be a monotonous or exponential pattern, because the numbers do not increase or decrease every step. Check if the same transformation is applied between number 1 and number 2 as between number 3 and number 4 or number 4 and number 5.

Alternating_Example_1_2.png

The answer is -22

Tip: In general there will be no more than 3 different patterns in a series. If you suspect this pattern applies, quickly check if the same transformation is applied between number 1 and number 2 as between number 3 and number 4, or number 4 and number 5.

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