​In the following number sequence, find out how many times ‘7, 5 and 3’ have appeared together in the same order?
7 3 7 5 3 7 5 7 5 3 7 5 7 5 3 7 5 3

Given: ​7 3 7 5 3 7 5 7 5 3 7 5 7 5 3 7 5 3

Logic: Count only those positions where 7 is immediately followed by 5 and then by 3.

7 3 7 5 3 7 5 7 5 3 7 5 7 5 3 7 5 3

Total valid occurrences = 4​​

Thus, correct option is (A).