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Find 5p2

Solution:
Your problem `->` 5p2


`{::}^n P_r = (n!) / ((n-r)!)`

`{::}^5P_2=(5!) / ((5 - 2)!)`

`=(5!) / (3!)`

`=(5 * 4 * (3)!) / (3!)`

`=5 * 4`

`=20`






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