Answer:
=SUM(Range value)
like =SUM(A1:A7) or =SUM(A1:H1)
Explanation:
We need to make use of the SUM function, and then we need to mention the cells or range value that references a series of cells row-wise or column-wise. Like a range value of A1:A7 means A1,A2,A3,A4,A5,A6,A7 and the range value of A1:H1 means A1, B1,C1,D1,E1,F1,G1,H1. And similarly, you can represent various cells depending upon the code you come up it, and finally, you need to sum them all using the SUM function.
Answer:
A logical unit of a system.
Explanation:
i'm thinking your are talking about system layers such as the ISO? Layers help identify the order of how the whole system works.