Replace the incorrect term by the correct term in the given sequence 3 2 7 4 13 10 21 18 31 28 43 40...........

Math and Mental Ability Number series

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Replace the incorrect term by the correct term in the given sequence

3, 2, 7, 4, 13, 10, 21, 18, 31, 28, 43, 40

where odd terms and even terms follow the same pattern.

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Complete-Test, Previous year (2021)

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Explanation:

On separating the Odd and the Even Series, we observe the following pattern:
ODD SERIES EVEN SERIES
3 2
3 + 4 = 7 0 + 4 = 4
7 + 6 = 13 4 + 6 = 10
13 + 8 = 21 10 + 8 = 18
21 + 10 = 31 18 + 10 = 28
31 + 12 = 43 28 + 12 = 40
On observing the given two series, we observe that the first term in EVEN SERIES should be replaced by 0, therefore option (1) is the correct answer.