Question

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​

Answer 1

ANSWER

7 4 2 7 6 4 3 6 7 5 3 5 7 8 4 3 7 6 7 2 4 0 6 7 4 3

There are 2 such 7s in the series that are immediately preceded by 6 and not immediately followed by 4.