Out of 7 consonants and 5 vowels the number of different words can be formed each consisting of 3 consonants and 2 vowels is
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a
350
b
42,000
c
4,200
d
1800
answer is B.
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Detailed Solution
=7c3×5c2×5! =35×10×120=42000 the number of different words can be formed each consisting of 3 consonants and 2 vowels 7 consonants and 5 vowels is 42,000