C might be the correct answer try it :)
1 base. The triangular pyramid has 1 base, and that is the square at the bottom. Hope this helps.
Answer:
USE A CALCULATOR LIKE THE REST OF USE
Step-by-step explanation:
we must do the following:
0
1
2
3
4
5
6
7
8
9
select the major, the minor and the half and add, like this:

therefore:

also:

the groups are:
(9,0,1,5); (7,6,2); (8,4,3)
Answer: 321 for #1 and 52 for #2
Step-by-step explanation: I divided and got 321 for #1 and 52 for #2.