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lyudmila [28]
3 years ago
14

Evaluate: 5P5. it's for permutations. someone help pls

Mathematics
1 answer:
gayaneshka [121]3 years ago
4 0

Answer:

120

Step-by-step explanation:

Using the definition

nP_{r} = n! / (n - r ) !

where n! = n(n - 1)(n - 2) ....... × 3 × 2 × 1

Hence

5P_{5} = 5! / 0! = 5! ← 0! = 1

5P_{5} = 5! = 5 × 4 × 3 × 2 × 1 = 120

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