There are only 999 three digit whole numbers.
102 = 100 which is the first possible three digit number that is a perfect square. 312 = 961 which is the last possible three digit number that is a perfect square. So there are 22 three digit positive numbers that are perfect squares.
27 three digit numbers from the digits 3, 5, 7 including repetitions.
There are 900 three digit numbers. (99 - 1000) (# of possible numbers in the first position = 9) (# of possible numbers in the second position = 10) (# of possible numbers in the third position = 10) 9 *10 *10 = 900
None. The only way for it to be possible would be 3 zeros which is not considered a 3 digit numbers.
30,25,15,20, or 10.
21
21.
5
There are five such numbers.
A lot
There are only 999 three digit whole numbers.
There are no three didgit numbers but there are 63 three digit numbers.
Oh, what a happy little question! There are 90 three-digit palindromic numbers in total. You see, they start at 101 and end at 999, with each one bringing its own unique charm and symmetry to the canvas of mathematics. Just imagine the joy of exploring all these lovely palindromic numbers!
171
There are 900 three-digit numbers.
300300300300