Answer:
479
Step-by-step explanation:
The units digit cannot be 1 That would make the 10s digit - 1. The tens digit cannot be 9. That would make the units digits 11.
Let's try x79 If that is correct, the hundreds digit is 4 because the hundreds digit is three less than the tens.
Answer: 479
479 is between 100 and 999. 4 and 9 are perfect squares. u>t. 4 is the only even number.