Permutations Practice Test 2

Question : 11 of 30

Marks: +1, -0

In how many ways can top 5 students settled for the 1st, 2nd and 3rd position?

Solution:

Here it is clear that all the three of the positions can be occupied by only one person, without repetition.
So, the required number of ways

= ^10 P_3={10×9×8×7!}/{7!}

= 720 ways.

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