Answer:
27
Step-by-step explanation:
If set A has 3 elements then number of elements in A*A*A is 27
the combination of numbers must then be:
9.7 + 8.6 which results to 18.3
9.6 + 8.7 yields 18.3 as well.
8/18
10.5
the atomic number
the atomic number is the number of protons in the shell
