How many permutations exist of the letters p, q, r, s, and t, taking four at a time?
a: 120<...
Mathematics, 05.02.2020 12:05 isarahweller103
How many permutations exist of the letters p, q, r, s, and t, taking four at a time?
a: 120
b: 24
c: 5
Answers: 3
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