If a digit can be repeated there are 5 x 5 x 5 = 125 possible numbers
If a digit cannot be repeated there are 5 x 4 x 3 = 60 possible numbers.
0.12 Or 102 if you do not want to include non integers.
Fifty
279,999,720
Yes. Integers include both positive and negative numbers (and zero). Anything that, when written in decimal, has no digits after the decimal point.
There are none.
0.12 Or 102 if you do not want to include non integers.
The sum of all the digits of all the positive integers that are less than 100 is 4,950.
Fifty
279,999,720
125
50%
Three of them.
Yes. Integers include both positive and negative numbers (and zero). Anything that, when written in decimal, has no digits after the decimal point.
They are 13.
405
There are 21.
52