PLEASE HELP!!!!!!!!
Thanks! This is due tomorrow morning and I have a couple more questions about my quiz. This is 1 question.

Pete has nine buttons from his favorite band. He would like to put some buttons on his backpack, but there is only room for two. How many different ways can he select two buttons to put on his backpack?

Question

PLEASE HELP!!!!!!!!
Thanks! This is due tomorrow morning and I have a couple more questions about my quiz. This is 1 question.

	Pete has nine buttons from his favorite band. He would like to put some buttons on his backpack, but there is only room for two. How many different ways can he select two buttons to put on his backpack?

anonymous · Answer

Total Number of Buttons	
3
	
4
	
5
	
6
	7	8	9
Number of Ways	
3
	
6
	
10
	 	 	 	 
							

 	
	15 ways
	21 ways
	28 ways
	36 ways