NCERT Class XI Mathematics - Permutations and Combinations - Solutions
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Question : 41
Total: 41
In how many ways can the letters of the word ASSASSINATION be arranged so that all the S’s are together ?
Solution:
The total no. of letters in the word ASSASSINATION = 13, in which there are 3A’s, 4S’s, 2N’s and 2I’s.
When all S’s are taken together then take it as one object. Thus, we have a total of (9 + 1) letters.
∴ Required no. of words =
When all S’s are taken together then take it as one object. Thus, we have a total of (9 + 1) letters.
∴ Required no. of words =
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