Study the following arrangement carefully and answer the questions given below :
3 9 2 4 7 5 9 2 8 1 4 9 5 3 1 6 5 7 3 4 2 9 8 1 3 6 2 8 1 7 5 4 5
How many such 3s are there in the given arrangement, each of which immediately preceded by an odd digit and also immediately followed by an even digit ?
We need to find 3's which are immediately preceded by an odd digit and also immediately followed by an even digit
= (odd) (3) (even)
3 9 2 4 7 5 9 2 8 1 4 9 5 3 1 6 5 7 3 4 2 9 8 1 3 6 2 8 1 7 5 4 5
Thus, there are two such 3's.
=> Ans - (B)
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