SOLUTION: A person has 12 friends of whom 8 are relatives .In how many ways can he invite 7 guests such that 5 of them are relatives? Please kindly give me ur solution.
Thank you
Algebra.Com
Question 778532: A person has 12 friends of whom 8 are relatives .In how many ways can he invite 7 guests such that 5 of them are relatives? Please kindly give me ur solution.
Thank you
Answer by psbhowmick(878) (Show Source): You can put this solution on YOUR website!
Out of 12 friends 8 are relatives.
So there are 8 relatives and 4 just friends.
No. of ways in which 5 relatives can be invited is 8C5.
No. of ways in which 2 friends can be invited is 4C2.
The ways in which friends can be invited is associated with that in which relatives can be invited.
So total no. of ways in which 7 guests can be invited such that 5 of them are relatives is 8C5 x 4C2 = 56 x 6 = 336.
RELATED QUESTIONS
a person has 12 friend of whom 8 are relative.in how many ways can he invit 7 friends... (answered by greenestamps)
A husband has 7 relatives, 4 of them are
women and the rest men. His wife too
has 7... (answered by Edwin McCravy)
A man has 7 relative.Four of them are ladies and 3 gentleman;his wife also has 7... (answered by VFBundy)
A woman has 11 friends and she would like to invite 5 of them for a get together, in how... (answered by ikleyn)
A man has 3 friends .In how many was can he invite one or more of them to... (answered by richard1234)
A man has 7 friends and he want to invite 3 of them at a party.Find how many parties to... (answered by ewatrrr)
Help!
A woman has 11 close friends. In how many ways can she invite 5 of them for... (answered by VFBundy)
A woman has 11 friends and she would like to invite 5 of them for a get together, in how... (answered by ikleyn)
Ron is having a dinner party. He invites 7 out of his 10 friends. In how many ways can he (answered by ikleyn)