In the given letter series, how many S’s are immediately preceded by E but not immediately followed by E?
E S S H H A A T E S A E S S E T S S S E E E S E T
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 3
Here an S is counted only when the letter just before it is E and the letter just after it is not E. Each S in the series is checked with its neighbours:
E S S (2nd term): counted
S S H (3rd term): preceded by S, not counted
E S A (10th term): counted
E S S (13th term): counted
S S E (14th term): preceded by S, not counted
T S S (17th term): preceded by T, not counted
S S S (18th term): preceded by S, not counted
S S E (19th term): preceded by S, not counted
E S E (23rd term): followed by E, not counted
So the count is three (3).