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OpenStudy (anonymous):
How many strings of length 3 are possible (without repetition) given a set X = {a, b, c, d}
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OpenStudy (anonymous):
\[ 4 \times 3 \times 2 = 24 \] Revert if you don't understand.
OpenStudy (anonymous):
That what I got. Just wanted to make sure. Thanks
OpenStudy (anonymous):
Glad to help :)
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