There are 5 numbers which can make the 3 digit numbers in this example. Therefore each digit in the 3 digit number has 5 choices of which number can be placed there. Therefore number of 3 digit numbers = 5 x 5 x 5 = 125
285
The greatest 3-digit number that is not divisible by 2, 3, 5, or 10 is 997.
1
99324 (the third digit is 3)3+2=5
It is 500.
99987
Except for 5 itself, the units digit of a prime can't be 5. Any number ending in 5 is divisible by 5.
One two digit number that is not prime and is not a multiple of 2, 3, or 5 is 49. Another such number is 91.
875
There are 180 3-digit numbers divisible by five.
194