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sp2606 [1]
3 years ago
6

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. What is the probability that t

he applicant who gets the job plays drums or guitar?
Mathematics
1 answer:
Alika [10]3 years ago
5 0

Answer:

The probability is 8 over 15.

Step-by-step explanation:

14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar.

It means n(G and D)=14, n(D)=28, n(G)=18.

Using the formula of Union:-

n(G or D) = n(G) + n(D) - n(G and D).

n(G or D) = 18 + 28 - 14.

n(G or D) = 32.

It says 60 musicians applied for a job at a music school. So n(U)=60.

The probability that the applicant who gets the job plays drums or guitar is = n(G or D)/n(U) = 32/60 = 8/15.

Hence, the probability is 8 over 15.

Read more on Brainly.com - brainly.com/question/12053357#readmore

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Step-by-step explanation:

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How many ways can an employer send 3 employees to a job fair if she has 11 employees?
algol13

We have to find the number of ways an employer send 3 employees to a job fair if she has 11 employees.

This is the problem from combination.

The formula for combination is given by

^nC_r= \frac{n!}{r!(n-r)!}

Here, n= 11, r= 3

Therefore, total number of ways is given by

^{11}C_3= \frac{11!}{3!(11-3)!}\\
\\
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\\
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\\
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A is the correct option.


6 0
3 years ago
The secret number has a 7 in the ones place. The tens number is an odd number
Lana71 [14]
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coldgirl [10]
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