A word consist of 9 letters; 5 consonants and 4 vowels. Three lettersare chosen at random. What is the probability that more than one vowel willbe selected?

A word consist of 9 letters; 5 consonants and 4 vowels. Three lettersa

1.	A word consist of 9 letters; 5 consonants and 4 vowels. Three lettersare chosen at random. What is the probability that more than one vowel willbe selected?
Answer» 9 letters=5 constant,4vowels `.^9C_3`-total ways Favorable cases->Vowels->more than one 2 vowels=`.^4C_2.^5C_1` 3 vowels=`.^4C_3.^5C_0` `P=(.^4C_2.^5C_1+.^4C_3.^5C_0)/(.^9C_3)`.

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A word consist of 9 letters; 5 consonants and 4 vowels. Three lettersare chosen at random. What is the probability that more than one vowel willbe selected?

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