BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Probability

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 54
Joined: Tue Sep 20, 2011 7:58 am
Thanked: 1 times
Followed by:1 members

Probability

by sparkle6 » Sun Sep 25, 2011 6:32 am
From a group of 3 boys and 3 girls, 4 children are to be randomly selected. What is the probability that equal numbers of boys and girls will be selected?

A. 1/10
B. 4/9
C. 1/2
D. 3/5
E. 2/3

[spoiler]Answer: D[/spoiler]
Top
Source: — Problem Solving |
Legendary Member
Posts: 966
Joined: Sat Jan 02, 2010 8:06 am
Thanked: 230 times
Followed by:21 members

by shankar.ashwin » Sun Sep 25, 2011 6:35 am
(3C2 * 3C2) / 6C4 = 3/5

3 of each type and 6 in total, you chose 2 from each and 4 in total from 6
Top
Post new topic Post Reply
• Page 1 of 1