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Mathematics 13 Online
OpenStudy (anonymous):

how many bit string of 6 lowercase alphabets contains a) exactly one vowel b) exactly two vowels c) atleast one vowel d) atleast two vowels

OpenStudy (anonymous):

) 5.6.21.21.21.21.21 b) 15 . 6 C 2 . 21 . 21 . 21 . 21 c) 26^6 - 21^6 d) 26^6 - 21^6 - 5.6.21.21.21.21.21

OpenStudy (anonymous):

sorry, uhm a is 5.6.21.21.21.21.21 b is 15.6C2.21.21.21.21, c is 26^6-21^6, and d is 26^6-21^6-5.6.21.21.21.21.21

OpenStudy (anonymous):

i was trying to copy paste it from my hwrk on word, and it didn't work out too well haha, hope it helps!

OpenStudy (anonymous):

need explaintion for b, rest sre ok

OpenStudy (anonymous):

are*

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