Question 269392
I am a number between 500 and 600. 500<n<600 the hundreds digit has to be 5. (5yz)
 my ones digit is 5.(xy5)
 my tens digit is the difference between my ones and hundreds digit.
ones digit=z tens digit=y hundreds digit=x
y=z-x x=5 and z=5
y=5-5
y=0
so the number xyz is 505