A Combination and Permutation Problem
Probability
Level
pending
There're 5 balls in a bag, on the 5 balls there're 5 different number-1, 2, 3, 4, and 5. If you choose 3 of them randomly and make permutations from it, how many permutation can you get?
The answer is 60.
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1 solution
Choose 3 from 5: 5C3＝10 Arranging 3 numbers: 3P3＝6 10x6＝60