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Korolek [52]
3 years ago
9

Evaluate the given expression a.

Mathematics
1 answer:
ira [324]3 years ago
3 0

Answer:

option d is correct

20

Step-by-step explanation:

Formula for permutation _{n}P_{r} is given by:

_{n}P_{r} = \frac{n!}{(n-r)!}

Given the expression:

_{5}P_{2}

here, n = 5 and r = 2

then;

_{5}P_{2} = \frac{5!}{(5-2)!}

⇒_{5}P_{2} = \frac{5!}{3!} = \frac{1 \cdot 2 \cdot 3 \cdot 4 \cdot 5}{1 \cdot 2 \cdot 3}

Simplify:

_{5}P_{2} =20

Therefore, the value we get, 20

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Answer:

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Step-by-step explanation:

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<h3>Answer:</h3>

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Answer:

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