Ten different letters of an alphabet are given. Words with five letters are formed from…
Mathematics · JEE Advanced · NTA Exams — Permutations and Combinations
Ten different letters of an alphabet are given. Words with five letters are formed from these given letters. Then the number of words which have atleast one letter repeated, is
- 69760
- 30240
- 99748
- none of these
Answer
(A) 69760
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