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AMU MCA Previous Year PYQ AMU MCA AMU MCA 2024 PYQ
Out of 6 consonants and 3 vowels, how many words of 3 consonants and 2 vowels can be formed?
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AMU MCA Previous Year PYQ AMU MCA AMU MCA 2024 PYQ
Solution
Choose consonants: $^6C_3 = 20$
Choose vowels: $^3C_2 = 3$
Arrange 5 selected letters: $5! = 120$
Total words $= 20 \times 3 \times 120 = 7200$
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