In a party there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at the least two couples?  Pick
A) 5/21 B) 5/28 C) 5/20 D) 5/22 E) 5/25
Number of ways of (selecting at least two couples among five people selected)   As remaining person can be any one among three couples left.   Required probability   = (10 * 6)/252 = 5/21   5/21nswer: 5/21
<result>A</result>
In a party there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at the least two couples?