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How many four-digit, positive integers are there where each digit is a prime number?

 Apr 3, 2020

Best Answer 

 #1
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1 - If repeats are allowed such as 3377, then you have: 4^4 = 256 such numbers

 

2 - If repeats are not allowed, such as 2357, then you have: 4! = 24 such numbers.

 Apr 3, 2020
 #1
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+1
Best Answer

1 - If repeats are allowed such as 3377, then you have: 4^4 = 256 such numbers

 

2 - If repeats are not allowed, such as 2357, then you have: 4! = 24 such numbers.

Guest Apr 3, 2020

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