WBPSC 2019 Solved Paper
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Question : 90 of 200
Marks:
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How many 3s are there in the following sequence which are neither preceded by 6 nor immediately followed by 9?
9 3 6 6 3 9 5 9 3 7 8 9 1 6 3 9 6 3 9
9 3 6 6 3 9 5 9 3 7 8 9 1 6 3 9 6 3 9
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