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Cortez Ingram
Mathematics
19 February, 21:04
Evaluate the expression 9P1
+2
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1
)
Amara Adkins
19 February, 21:32
0
9
Explanation:
The expression above signifies the Permutation expression
Permutation expression is given as nPr
The Permutation expression is calculated as:
nPr = P (n, r) = n! / (n - r) !
It the above question, we were asked to evaluate the expression 9P1
From the above question, we can see that:
n = 9 and r = 1
Therefore, the expression
9P1 = 9! / (9 - 1) !
9P1 = 9! / 8!
= 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1 / 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1
= 362880 / 40320
= 9
Therefore, the evaluation of the expression 9P1 = 9
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