Question

How many 5s are there in the following number series which are immediately followed by 3 but not immediately preceded by 7?
2 1 5 3 2 5 3 8 5 5 6 8 7 3 3 5 7 7 5 3 6 5 3 2 5 7 3 9

• A. One
• B. Two
• C. Three
• D. Four
• E. More than four

Answer 1

The correct option is C Three

A number which comes after a given number is said to follow it while one which comes before the given number precedes it
The 5s satisfying the given conditions can be shown in the series as :
Thus there are three 5s.
2 1 5−5_ 3 2 5−5_ 3 8 5 5 6 8 7 3 3 5 7 7 5 3 6 5−5_ 3 3 5 7 3 9