There are 10 members in a committee. Out of these 10 members, 6 are women and the remaining members are men. But, now the society has fixed the number of female members to 3 and the number of male members to only 1. In how many ways can this combination be formed which results in a committee of exactly 4 members out of which 3 are female and 1 is men from a total of 10 members

I cannot solve this problem, please help.

There are 10 members in a committee. Out of these 10 members, 6 are women and the remaining members are men. But, now the society has fixed the number of female members to 3 and the number of male members to only 1. In how many ways can this combination be formed which results in a committee of exactly 4 members out of which 3 are female and 1 is men from a total of 10 members

Thanks.

Default Asked on November 2, 2017 in GMAT.
Add Comment
1 Answer(s)

Your question was –
There are 10 members in a committee. Out of these 10 members, 6 are women and the remaining members are men. But, now the society has fixed the number of female members to 3 and the number of male members to only 1. In how many ways can this combination be formed which results in a committee of exactly 4 members out of which 3 are female and 1 is men from a total of 10 members?

A few days ago I take part an exam where I have faced this GMAT questions and my answers option were –

a. 20
b. 40
c. 60
d. 80
e. None of the above

I have answered as my Correct answer is = d

Because of this following Explanation:

According to the question,
Condition 1:
Total number of members originally = 10 Total number of female members = 6 Total
number of male members = 4
Condition 2:
Total number of members newly = 4 Total number of female members = 3 Total
number of male members = 1
Now, total possible outcomes for 6 females in 3 places = 6*5*4/3*2*1 = 120/6
∴ Total possible outcomes for 6 females in 3 places = 20
Similarly, possible outcomes for 4 males in 1 place = 4/1 = 4.
∴ The total number of combinations is equivalent to the product of the above two results
= 20*4 = 80
Hence, the correct answer is option d.

Hope you have got your answer.
Thanks.

Silver Answered on November 2, 2017.
Add Comment

Your Answer

By posting your answer, you agree to the privacy policy and terms of service.