900
200
200
Zero. Only the digits 5 and 0 appear in 500.
200
200
100 times because if you do the opposite with the numbers you have, 500/5=100
An infinite number of times. If you restrict yourself to whole numbers, 500 has 6 factor pairs.
95
1 digit number: only 1 number 2 digits number: 18 numbers 3 digits number: 76 So there are 95 numbers containing 9.
There are infinitely many such numbers.
The question does not make sense. There are not 500 prime numbers but infinitely many!
infinite-500