125 or -27 or -64 or 8 or 343 or 1
64
99,001
9 on apex
This sum can be any of 14 (from the number 95 or 59), 12 (from the number 84 or 48), 10 (from the number 73 or 37), 8 (from the number 62 or 26), 6 (from the number 51 or 15), or 4 (from the number 40).
It means it is odd (ends in 1, 3, 5, 7, or 9), when you multiple the digits together you get 24 for an answer, and when you subtract the digits from each other you get 5. Hope this helps.
19
18
899
28
37
64
63
99,001
63
A digit is part of a number. the number 23 has two digits 2 and 3.
It is easiest to explain with an example. Suppose you have a number 4627. Then the number obtained by reversing [the order of] its digits is 7264. The difference between them is the bigger number minus the smaller number. So here it would be 7264 - 4627 = 2637.
The smallest two digit number is 00 (a number used as a wire gauge) and the largest is 99, so the difference between the largest and smallest 2-digits numbers is 99 (99 - 00)