Question

4. You have five people who are your friends on a certain social network. You are related to two of the people, but you do not recall who of the five people are your relatives.
You are going to invite two of the five people to a special meeting. If you randomly select two of the five people to invite, explain how you would derive the probability of inviting your
relatives to this meeting.

Answer 1

Answer:

the probability of inviting both relatives to the meeting = 1/10

Step-by-step explanation:

There are total two invitations that I will send, hence two selections.

For the first selection, I have 5 people total and two of them relatives.

Hence, the probability of inviting relative in first choice is 2/5.

Now assuming that we have invited one relative out of 5 people,

we are left with only 4 people out of which one is relative.

So, probability of inviting relative in second choice is 1/4.

So the probability of inviting both the relatives is (2/5)*(1/4) = 1/10