Question 761132
I am 5 digit number; my ones digit is less than my hundred's digit;
 my other digits are all twice my one's digit.
what number am i?
:
Let a = the hundreds digit
Let b = the one's digit
then
2b = the 10 thousand, 1 thousand and 10's digits
:
b < a
also we know
b < 5
:
2b, 2b, a, 2b, b
:
How about 8 8 9 8 4? A lot of others can be used