Question 163

How many such 7s are there in the following number sequence each of which is immediately preceded by 5 and not immediately followed by 8?
2 3 5 7 8 9 3 4 5 7 6 1 9 3 5 7 4 8 3 2 5 7 8 8 9 2 5

Solution

7's which are immediately preceded by 5 and not immediately followed by 8 : (5) (7) (not 8)

2 3 5 7 8 9 3 4 5 7 6 1 9 3 5 7 4 8 3 2 5 7 8 8 9 2 5

Thus, there are two such 7's.

=> Ans - (C)

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How many such 7s are there in the following number sequence each of which is immediately preceded by 5 and not immediately followed by 8?2 3 5 7 8 9 3 4 5 7 6 1 9 3 5 7 4 8 3 2 5 7 8 8 9 2 5