Quantcast
Channel: GMAT Club Forum - Forums > Reading Comprehension (RC)
Viewing all articles
Browse latest Browse all 291973

Problem Solving (PS) | Re: Six distinct pair of shoes are in a closet. If three shoes are

$
0
0
VyshakhR1995 wrote:

Six distinct pair of shoes are in a closet. If three shoes are selected at random from the closet,what is the probability that no two of the chosen shoes make a pair

A. 1/5
B. 2/11
C. 13/33
D. 8/11
E. 4/5


I use method 1 - opposite probability

Select 3 shoes with 2 are a pair:

Ways to select a pair: 6C1
Ways to select any shoe from 10 shoes: 10C1
Total ways to choose 3 shoes: 12C3

Probability: (6C1X10C1)/12C3 = 3/11

Probability of no pair of shoes in any three shoes: 1-(3/11)=8/11

Answer
...

Viewing all articles
Browse latest Browse all 291973

Latest Images

Trending Articles



Latest Images

<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>