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Mathematics 13 Online
OpenStudy (anonymous):

how many 4 letters combination containing 3 consonant and 1 vowel that can be made from this set if all the letters in combination must be unique

OpenStudy (anonymous):

please help me

OpenStudy (anonymous):

order does not matter and no repetition. There are 21 consonants and 5 vowels. So (21C3) (5C1)

OpenStudy (anonymous):

thank you

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