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April 10th, 2013, 07:21 PM  #1 
Newbie Joined: Oct 2012 Posts: 8 Thanks: 0  How many options at the salad bar?
A restaurant advertises that its salad bar offers 32,767 different combinations of items for its customers. How many items are included in its salad bar? 
April 11th, 2013, 10:47 AM  #2  
Senior Member Joined: Feb 2010 Posts: 706 Thanks: 140  Re: How many options at the salad bar? Quote:
 
April 11th, 2013, 11:11 AM  #3 
Member Joined: Apr 2013 Posts: 65 Thanks: 0  Re: How many options at the salad bar?
There are 2 options for each item: you either have it or not. So if you had 6 items, you would have 2^61 combinations. 32767+1=2^15. Hence, as mrtwhs has already said, the answer is 15.


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