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Marianna [84]
2 years ago
14

Use the permutation formula to solve a problem when n = 15 and r = 4.

Mathematics
2 answers:
Zinaida [17]2 years ago
6 0
The anwser is D .........
barxatty [35]2 years ago
3 0

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

15P4 =  \frac{15!}{(15 - 4)!} = \frac{15!}{11!} \\  = \frac{15 \times 14 \times 13 \times 12 \times 11!}{11!} \\ 15 \times 14 \times 13 \times 12 = 32760

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Answer:

Step-by-step explanation:

Given the inequality solved by a student expressed as:

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Step 2: Divide through by 6

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Since we are not  given the options, you can compare the solution given with that of the student to figure out the error. The major error that may happen is the different not changing the inequality sign after multiplying or dividing with a negative value as shown.

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Answer:

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