If you have 5 people, how many handshakes are possible?
If you have 5 people, how many handshakes are possible?
Approach: 5C2.
10. (5 * 4) / 2 = 10.
Follow-up: How many handshakes for 10 people?
Key concepts: combinations.
If you have 5 people, how many handshakes are possible?
Approach: 5C2.
10. (5 * 4) / 2 = 10.
Follow-up: How many handshakes for 10 people?
Key concepts: combinations.