question_answer

In a certain series given below, count each 5 which is not immediately preceded by 3 but is immediately followed by 7. How many such 5's are there?

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

A)  1                    

B)  2

C)  3                                

D)  4