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Lilit [14]
3 years ago
5

For a segment of a radio​ show, a disc jockey can play 6 records. If there are 11 records to select​ from, in how many ways can

the program for this segment be​ arranged? ________ ways.
Mathematics
1 answer:
saul85 [17]3 years ago
8 0

Answer:

The records can be select in 332,640 ways.

Step-by-step explanation:

Consider the provided information.

There are 11 records to select from and a disc jokey can play 6 records.

Here, we need to find the number of permutation of n = 11 records taken r = 6 at a time.

Use the formula: ^nP_r=\frac{n!}{(n-r)!}

Substitute the respective values in the above formula.

^{11}P_6=\frac{11!}{(11-6)!}

^{11}P_6=\frac{11!}{5!}

^{11}P_6=\frac{5!\times6\times7\times8\times9\times10\times11}{5!}

^{11}P_6=332640

Hence, the records can be select in 332,640 ways.

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Here the two events can be defined as follows:

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The information provided are as follows:

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If A cannot, then there is a chance that her friend B can fix it.

The above statement suggest that the events A and B are mutually exclusive, i.e. if A can fix the computer then B does not have to and if cannot then only B will fix it.

That is, P (A and B) = 0.

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Compute the probability it will be fixed by either A or B as follows:

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(b)

Compute the probability that if it is fixed it will be fixed by B as follows:

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