<PRE><B>Question 195761</B>
If a set has 1024 subsets, how many elements does it have?
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A set with n elements has 2^n subsets because each of the n elements
is either in or out of a given subset.
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So, if 2^n = 1024
n = 10
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How many bicycle license tags can you make with 4 numeral spaces? 
Use 10 digits and no blank spaces. 
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10 ways to choose the 1st space
10 ways to choose the 2nd space
10 ways to choose the 3rd space
10 ways to choose the 4th space
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Total = 10^4 = 10,000 license tags possible
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Cheers,
Stan H


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