Vowel words math puzzle
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At least one vowel means there may be 1 vowel or 2 vowels or …. 5 vowels
For this question, we consider repetition to be allowed
so, (Total number of cases – cases for no vowel) =cases for at least one vowel
Total number of cases = 26*26*26*26 = 456976
csaes for no vowel = 21*21*21*21= 194481
cases for at least one vowel are = 456976 – 194481 = 262495
Your Answer
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