In a room filled with 5 people, 3 people have exactly 2 siblings in the room and 2 people don't have any siblings in the room. If two individuals are selected from the room at random, what is the probability that those two individuals are NOT siblings?  Select the correct option:	A) 3/5	B) 4/5	C) 3/10	D) 7/10	E) 9/10
The 5 people consist of one set of 3 siblings and 2 other people who are not siblings.   The number of ways to choose 2 people is 5C2 = 10.   The number of ways to choose 2 from the group of siblings is 3C2 = 3.   The number of ways to choose 2 people who are not siblings is   10-3= 
<gadget id="calculator">  10-3</gadget>
<output>7</output>
7.   P(the two people are not siblings)= 7/10   The answer is 7/10.
<result>D</result>
In a room filled with 5 people, 3 people have exactly 2 siblings in the room and 2 people don't have any siblings in the room. If two individuals are selected from the room at random, what is the probability that those two individuals are NOT siblings?