probability, permutations, and combinations

[Genisnotme]

How many 4 digit numbers can you make using the numbers 1,2,3,5 if the number must be even and you can reuse a number?

 

[Deleted member 4993]

How many 4 digit numbers can you make using the numbers 1,2,3,5 if the number must be even and you can reuse a number?

Please show us what you have tried and exactly where you are stuck.

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Please share your work/thoughts about this problem

 

[pka]

How many 4 digit numbers can you make using the numbers 1,2,3,5 if the number must be even and you can reuse a number?

Hint: the only way a number is even is for its last digit is even.