Ten different letters of an alphabet are given. Words with five letters are formed from these gi....

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Ten different letters of an alphabet are given. Words with five letters are formed from these given letters.
\( \mathrm{P} \)
The number of words which have at least one of their
W.
letters repeated is
(1) 69760
(2) 30240
(3) 99748
(4) 60480


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