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Evaluate each of the following: \ ^(10)P...

Evaluate each of the following: `\ ^(10)P_4`

Text Solution

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As we know that, 10P4 can be written as P (10, 4)
On using the formula, P(n, r) = n!/(n – r)!
P(10, 4)
= `10!/(10 – 4)!
= 10!/6! = (10 × 9 × 8 × 7 × 6!)/6! `
= `10 × 9 × 8 × 7 = 5040`
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