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

Question

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

anonymous · Answer

) 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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

need explaintion for b, rest sre ok

anonymous · Answer

are*