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igor_vitrenko [27]
3 years ago
12

Assume that 11 people, including the husband and wife pair, apply for 5 sales positions. People are hired at random. (1) what is

the probability that both the husband and wife are hired
Mathematics
1 answer:
Andrew [12]3 years ago
4 0

The probability that both the husband and wife are hired is \frac{2}{11}

<u><em>Explanation</em></u>

Total number of people = 11 and total number of sales positions = 5

So, the total possible number of ways for selecting 5 people from 11 people will be: ^1^1C_{5}

Now if both the husband and wife are hired, then it means <u>the remaining (5-2)= 3 positions are filled from the remaining (11 -2) = 9 people</u>.

So, the possible number of ways for selecting 3 people from 9 people will be: ^9C_{3}

Thus, the probability = \frac{^9C_{3}}{^1^1C_{5}}=\frac{84}{462}=\frac{2}{11}  

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