Answer:
100
Solution:
The hundred's place cannot cannot contain 0. So, it can be filled by any of the digits 1, 2, 3, 5, 7.
So, there are 4 ways to fill it.
Now, each of the ten's and unit's digits can be filled by any of the given five digits.
So, each can be filled in 5 ways.
∴the required number of numbers=(4×5×5)=100.
