You can
put this solution on YOUR website!How many different two-digit numbers can be formed from the digits 3, 1, 4, and 5 (allowing reuse)?
----------
1st digit: 4 ways
2nd digit: 4 ways
How many different two-digit numbers can be formed from the digits 3, 1, 4, and 5 (allowing reuse)?
----------
total ways 4*4 = 16
========
Cheers,
Stan H.