जॉइन Examsbookउत्तर : 1. "9!/(2!)^{2}x3!"
The number of permutations of the letters of the word 'MESMERISE' is ?5
प्र: The number of permutations of the letters of the word 'MESMERISE' is ?
- 19!/(2!)^{2}x3!true
- 29! x 2! x 3!false
- 30false
- 4Nonefalse
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उत्तर : 1. "9!/(2!)^{2}x3!"
व्याख्या :
Answer: A) 9!/(2!)^{2}x3! Explanation: n items of which p are alike of one kind, q alike of the other, r alike of another kind and the remaining are distinct can be arranged in a row in n!/p!q!r! ways.The letter pattern 'MESMERISE' consists of 10 letters of which there are 2M's, 3E's, 2S's and 1I and 1R.Number of arrangements = 9!(2!)2×3!