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Q.

Out of 10 consonants and 4 vowels, words with 6 consonants and 3 vowels are formed. The number of such words is

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a

711(12!)

b

910(12!)

c

710(11!)

d

45(12!)

answer is A.

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Detailed Solution

The number of ways of choosing 6 consonants out of 10 is  10C6 and 3 vowels out of 4 in  4C3. Thus number of such words is  10C4 4C3 9P9=711(12!)
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