SOLUTION: How many 26-letter arrangemenst of the alphabet have no two vowels together?

Question 32283: How many 26-letter arrangemenst of the alphabet have no two vowels together?
Answer by venugopalramana(3286) (Show Source): You can put this solution on YOUR website!
PLACE 21 CONSONANTS FIRST..THESE CAN BE ARRANGED IN
21P21 WAYS=21!WAYS
THEY HAVE 20 INTERSPACES AND 2 OUTER SPACES,WHERE WE CAN KEEP THE OWELS SO THAT THEY NEVER COME TOGETHER AND ALWAYS SEPERATED BY A CONSONANT.
IN 22 SPACES , 5 VOWELS CAN BE ARRANGED IN 22P5 WAYS=22!/(22-5)!=21!/17!
SO TOTAL NUMBER OF ARRANGEMENTS = 21!*22!/17!
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