Quandaries
and Queries 

I can't figure this out, The question is Find the greatest possible difference of two 3digit numbers that use the digits 3, 5, 7 and 9 only once in each number. The teacher says the answer is 62 but I can't figure out how she did it. Can you help. Melissa 

Hi Melissa, I don't think I understand the problem since 975 and 357 are two 3digit numbers that use the digits 3, 5, 7 and 9 only once in each number and
Penny Claude found the problem.
