How many four-digit numbers may be formed using elements from the set {1, 2, 3, 4, 5, 6} if elements may be used more than once

Question

How many four-digit numbers may be formed using elements from the set {1, 2, 3, 4, 5, 6} if elements may be
used more than once in a number and the number must be even?

Kunduz · Accepted Answer

Click to see the answer