Respuesta :
Answer:
49 handshakes
Step-by-step explanation:
By the Fundamental Counting Principle, if there are 7 ways to shake hands with each other and 7 ways to shake hands with every other person, then there are 7*7=49 ways to do both things, therefore 49 handshakes occur.
Answer:
21.
Step-by-step explanation:
I think its the number of combination of 2 form 7.
That is (7*6)/(2*1)
= 21.
