There are 6 handshakes between four people in the room.
<h3>Further explanation</h3>
The probability of an event is defined as the possibility of an event occurring against sample space.

<h2>Permutation ( Arrangement )</h2>
Permutation is the number of ways to arrange objects.

<h2>Combination ( Selection )</h2>
Combination is the number of ways to select objects.

Let us tackle the problem.
This problem is about Combination.
If there are 4 people in a room , then the number of handshaking between 2 people is analogy as selecting 2 people from 4 people available. We will use combination formula in this problem.





<h3>Learn more</h3>
<h3>Answer details</h3>
Grade: High School
Subject: Mathematics
Chapter: Probability
Keywords: Probability , Sample , Space , Six , Dice , Die , Binomial , Distribution , Mean , Variance , Standard Deviation