How many 4 number combinations can 3 numbers make?
There are 4 possible 4 number combinations that 3 numbers can make. How many 4 digit numbers can be formed using 7 5 0 2 only once in a Number? There are only sixteen 4 digit numbers that can be formed using 7 5 0 2 only once. How many combinations of 5 numbers are ... Read more...