A\ The highest number of numbers you can calculate is 83 looking like this:
6 6 6
25 52 2
314 413 664466 3
b\ The lowest number of numbers you can calculate is 64 looking like this:
1 1 1
53 35 5
462 264 112233 4
c\ we calculated the totals of a&b by making the cubes for each possible solution . We did this because it would be easier to gt the solution if you could visualize the answer . also we made sure that the higher number had more surface area showing to make a higher total . For the lowest total we did the opposite so we made sure that lowest number ha less surface area showing to make a lower number
d\ we made 75 by:
5 5 5
43 34 553311 4
621 126 6