In how many ways can 4 letters be arranged from letters of word addressee
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I think 4! ways. with repetition
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there r total of 9 letters
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imagine that there are 4 boxes where u can put the letters
in the first box u can add 9 and the same the other 3
there fore 9 x 9 x 9 x 9
= 6561
if the letters are not repeated it will be
9 x 8 x 7 x 6
3024 ways
---
imagine that there are 4 boxes where u can put the letters
in the first box u can add 9 and the same the other 3
there fore 9 x 9 x 9 x 9
= 6561
if the letters are not repeated it will be
9 x 8 x 7 x 6
3024 ways
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