Do question 6 and 7. Show the work please 6 Seating at a Table On Thanksgiving,

Question

Do question 6 and 7. Show the work please

6 Seating at a Table On Thanksgiving, 10 family members sit in a row on a long table. Of the 10 people to be seated, 4 of them are left-handed and 6 are right handed. To avoid elbowing each other while eating, the left-handed people are seated in the 4 chairs on the left. In how many ways can these 10 people be seated? 7 Insurance Company An insurance company has 68 employees. Of these, 21 have degrees in nsurance, 33 have degrees in economics and 7 have degrees in both. What is the probability that an employee chosen at random has a degree in either insurance or economics?

Explanation / Answer

Ans:

6)Number of ways 4 left handed people can be seated on the left side=4!=24

Number of ways 6 right handed people can be seated on the right side=6!=720

So,number of ways 10 people can sit=4!*6!=24*720=17280

7)

P(insurance)=21/68

P(economics)=33/68

P(insurance and economics)=7/68

P(insurance or economics)=P(insurance)+P(economics)-P(insurance and economics)

=(21/68)+(33/68)-(7/68)

=(21+33-7)/68

=0.6912

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