Four slip of papers with the numbers 1, 2, 3, 4 written on them are...

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Four slip of papers with the numbers 1, 2, 3, 4 written on them are put in a box. They are drawn
\( \mathrm{P} \)
one by one (without replacement) at random. In how
W
many ways it can happen that the ordinal number of atleast one slip coincide with its own number.
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