Question

Find r if 5 times of permutations taking from 4 objects and 6 times of r-1 permutation taking from 5 objects *​

Answer 1

Step-by-step explanation:

The following diagrams give the formulas for Permutation, Combination, ... The problem involves 5 things (A, B, C, D, E) taken 3 at a time

Answer 2

Find r if 5 times of permutations taking from 4 objects and 6 times of r-1 permutation taking from 5 objects

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