Posted by oscar on Wednesday, September 30, 2009 at 7:50pm.
write two 2digit numbers using each of the digits 1, 2, 3, and 4 only once. then find the sum of the numbers. what are the greatest and least possible sums that can be in made in this way?
so far for my greatest, I have 41 and 32 = 73
and 14 and 23 = 37 for my lowest.
can anyone tell me if i got it right?

math  jim, Wednesday, September 30, 2009 at 7:55pm
Yes. You want the two big digits in the tens place for the big one, and you want them in the units place for the small one. So
41 + 32, or 42 + 31, and
14 + 23 or 13 + 24
are the best you can do.