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Permutations

This is a discussion on Permutations within the Mathematical Puzzles forums, part of the Brain Gym category; Though there are different problems given below solutions are going to be same. There are 12 questions on a true/false test. If all questions are answered, in how many ...


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Old 07-23-2007
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Permutations
Though there are different problems given below solutions are going to be same.

There are 12 questions on a true/false test. If all questions are answered, in how many different ways can the test be completed?

Each of the 8 questions on a multiple-choice test have 3 possible answers to them. If all questions are answered, in how many ways can the test be completed?
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Old 07-23-2007
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Re: Permutations
Hi James,

The answer is 4096. Formula is 2 power 12 = 4096

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Old 07-23-2007
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Re: Permutations
It has one more question as well...
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Old 07-23-2007
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Re: Permutations
I think the second one answer is 6561. Solution is 3 power 8 = 6561

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