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Need help with a math question PLEASE HELP

Need help with a math question PLEASE HELP-example-1
User Tempestt
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2 Answers

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If you're allowed to repeat letters, then it's 12x12x12x12x12. If not, then it's 12x11x10x9x8.
User IntoTheDeep
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7 votes

For this case we have the following formula:


nP_ {r} = \frac {n!} {(n-r)!}

Where:

P: It is the number of permutations

n: It is the number of objects

r: It is the number of selected objects

According to the data we have to:


n = 12\\r = 5

Substituting:


12P_ {5} = \frac {12!} {(12-5)!} = \frac {12 * 11 * 10 * 9 * 8 * 7!} {7!} = 12 * 11 * 10 * 9 * 8 = 95,040

Finally, the number of permutations is 95,040

ANswer:

95,040

User James Pardon
by
6.7k points
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