Out of 7 consonants and four vowels ,how many words of three consonants and 2 vowels can be formed? op 1: 210 op 2: 1050 op 3: 25200 op 4: 21400 op 5: none of these correct op : 3 ques.
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Answer:
= 25200
Step-by-step explanation:
In out of 7 consonants, 3 consonants can be selected in ⁷C₃ ways.
In out of 4 vowels, 2 vowels can be selected in ⁴C₂ ways.
∴ Number of such words
= ⁷C₃ × ⁷C₂ × 5!
[ Since, 5 letters can be selected in 5 ways ]
= 35 × 6 × 120
= 25200
Option (3)
Good luck !!
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