How many numbers can be expressed as the sum of two or more distinct elements of the set {0,1,2,3,4,5}?
+876 Minimum: You want the least numbers possible, and for those numbers you want the least of your set, namely 0 and 1.
Maximum: You want the most numbers possible, and there isn't an upper bound, so 0 + 1 + 2 + 3 + 4 + 5 = 15 is your max.
Thus, [1, 15]
Verify:
0+1
0+2
0+3
0+4
0+5
1+5
2+5
3+5
4+5
1+2+3+4
1+2+3+5
1+2+4+5
1+3+4+5
2+3+4+5
1+2+3+4+5
