Answer: It looks like a Trapezoid
Step-by-step explanation:
The question is asking how many combinations of two people can be made from a group of ten people.
Using the formula C(10,2) = 10!/(2! x (10 - 2)! = 10!/(2! x 8!) = 45 handshakes.
A simple way to prove this is each person shakes the hand of 9 other people
10 x 9 = 90 but this counts every handshake from the view of both people involved.
The actual number of handshakes is therefore 90 / 2 = 45
1234 the diagram shows two shaded shapes A and B
Answer:
Step-by-step explanation:
96. All you do is add 12, 8 times.
