Alternating Pattern Sequences
11+ Maths, topic 7.3.1
Alternating Pattern Sequences
Often, a sequence will contain two separate patterns. You will need to identify each pattern to answer the question.
Example sequence
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Identify the first pattern
- Starting with the first number, each alternate number increases by 2.
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Identify the second pattern
- Starting with the second number, each alternate number decreases by 2.
Work out the next number
- The next number in the sequence will be 6 + 2.
- 6 + 2 = 8
Work out the next number
- The next number in the sequence will be 3 − 2.
- 3 − 2 = 1