I added two three-digit numbers a and b, where the six digits I
used to write a and b were all different. a + b was another three-digit number.
I added the digits in a and b to obtain another number n.
What can you say about n?
(In reply to
computer solution--I think what's wanted by Charlie)
Huh? That does not make sense to me.
I agree that the minimum n is 15, because the 6 digits in a and b could be 0 1 2 3 4 5.
And the maximum cannot be 4 + 5 + 6 + 7 + 8 +9 = 39,
because a + b cannot be a three digit number.
But I see no reason that the maximum can't be 3+5+6+7+8+9 = 38.
So I think n is between 15 and 38, inclusive.
For instance, a and b could be 367 and 589.
re: computer solution--I think what's wanted
