Question

write two 2-digit 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?

Answer 1

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.