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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
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Re: How many options at the salad bar?

Quote:
 Originally Posted by testtrail429 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?
15

 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 2^6-1 combinations. 32767+1=2^15. Hence, as mrtwhs has already said, the answer is 15.

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