maths
posted by jesica .
I am a three digit number. My tens digit is twice my ones digit, my hundreds digit is twice my tens digit. I am greater than 500. Who am i?

842.
421 isn't big enough 
753

We have:
I am a three digit number. My tens digit is twice my ones digit, my hundreds digit is twice my tens digit. I am greater than 500. Who am I?
How about 631?
631 is > 500.
This is a math riddle not a math question. There are several answers. 
Ahh, but the ratio of
unit digit:tens digit:hundred digit
must be 1:2:4
631 does not fit that ratio
drwl's answer of 841 does, and is the only one > 500 
Good point and you are right.
I did not capture that part of the question.
Good looking out, Reiny.
Thanks for the correction. 
842