Answer :
To find: the number of permutations of 10 objects, taken 4 at a time.
Formula Used:
Total number of ways in which n objects can be arranged in r places (Such that no object is replaced) is given by,
nPr
10P4
10P4
10
10P4
5040
Hence, the number of permutations of 10 objects, taken 4 at a time is 5040.
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