How many Bits do you need?

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Question code:		How many questions:
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	1	If you have 9 bits, what is the biggest number you can store?
	2	If you have 3 bits, what is the biggest number you can store?
	3	How many bits do you need to hold 2 different numbers?
	4	How many bits do you need to hold 16 different numbers?
	5	If you want to store the number 222, what is the minimum number of bits you will need?
	6	If you want to store the number 493, what is the minimum number of bits you will need?
	7	How many bits do you need to hold 2 different numbers?
	8	If you have 1 bits, what is the biggest number you can store?
	9	If you want to store the number 38, what is the minimum number of bits you will need?
	10	How many bits do you need to hold 128 different numbers?