Test Preparation on Mathematics Olympiad Class-6 paper-2

1.

In the following series, how many 2’s are there which are followed by 3?
4 6 2 5 7 8 3 2 3 6 4 5 3 8 2 7 2 3 8 9 2 3 6 2 5 7 8 2 4 3 1 4 2

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