Quantitative Aptitude Ques 633

Question: The number of words which can be formed from the letters of the word ‘MAXIMUM’, if consonants cannot occur together, is

Options:

A) 4! = 24

B) $ 3!,\times ,4! $

C) 836

D) 7!

E) None of these

Show Answer

Answer:

Correct Answer: C

Solution:

  • Number of different words which can be formed $ =\frac{7!}{3!} $ Consonants (MXMM) Number of words in which consonants occur together $ =\frac{4!}{3!} $ Number of words in which consonants do not occur together $ =\frac{7!}{3!}-\frac{4!}{3!}=\frac{4!}{3!}(7\times 6\times 5-1)=836 $