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In this type of questions, you are given alphabets from A to Z. The position of a letter is given in the form of a puzzle. The candidate is required to find yhis letter. However, sometimes a random letter series is given and the candidate is required to find out how many times a letter satisfying the conditions specified in the question, occurs.

In the following letter sequence, how many n's are followed by m but not preceded by h ?
a  g  r  h  t  n  m  b  c  n  m  l  b  u  v  n  m  h  e  r  h
n  m  g  f  e  h  n  m  e  c  n  m  w  q  a  n  m  h  l  b

Option:
A. 4
B. 5
C. 6
D. 7
Answer: B . 5

Justification:

a  g  r  h  t  n  m  b  c  n  m  l  b  u  v  n  m  h  e  r  h
n  m  g  f  e  h  n  m  e  c  n  m  w  q  a  n  m  h  l  b

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