Question 240547
I AM A WHOLE NUMBER, HALF OF ME IS GREATER THAN 20, ONE OF MY DIGITS IS DOUBLE THE OTHER WHAT NUMBER AM I ? 
ONE OF DIGITS IS A PERFECT SQUARE.
:
let x = the 10's digit
let y = the units digit
:
:
"One of the digits is double the other"
x = 2y
therefore we know x is an even number
:
"One of the digits is a perfect square"
1, 4,
:
number is either  48 or 84 (half is greater than 20)