जॉइन Examsbookउत्तर : 1. "4320"
The letters of the word PROMISE are to be arranged so that three vowels should not come together. Find the number of ways of arrangements?5
प्र: The letters of the word PROMISE are to be arranged so that three vowels should not come together. Find the number of ways of arrangements?
- 14320true
- 24694false
- 34957false
- 44871false
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उत्तर : 1. "4320"
व्याख्या :
Answer: A) 4320 Explanation: Given Word is PROMISE. Number of letters in the word PROMISE = 7 Number of ways 7 letters can be arranged = 7! ways Number of Vowels in word PROMISE = 3 (O, I, E) Number of ways the vowels can be arranged that 3 Vowels come together = 5! x 3! ways Now, the number of ways of arrangements so that three vowels should not come together = 7! - (5! x 3!) ways = 5040 - 720 = 4320.