How many times is M immediately followed by B in the given letter series?
M B T M M B K B M T B M B M K M B M B T
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 5
Here an M is counted only when the letter just after it is B. Each M in the series is checked with its neighbours:
M B (1st term): counted
T M M (4th term): followed by M, not counted
M M B (5th term): counted
B M T (9th term): followed by T, not counted
B M B (12th term): counted
B M K (14th term): followed by K, not counted
K M B (16th term): counted
B M B (18th term): counted
So the count is five (5).