If no digit may be used more than once, how many 2-digit numbers can be formed using only the digits 5, 6, 3, and 2?
3 answers
4 choices for each digit, so 4*4 values
The answers are:
11
12
10
2
11
12
10
2
My bad. I thought I read that digits could be repeated. So, the answer is 4*3 = 12
1 answer