Calculate the sum of the following
The first 9 Natural Numbers
S9 = | n(n + 1) |
2 |
S9 = | 9(9 + 1) |
2 |
S9 = | 9(10) |
2 |
S9 = | 90 |
2 |
S9 = 45
A = | Sum of the first 9 Natural Numbers |
Count |
A = | 45 |
9 |
Average (A) of the first 9 Natural Numbers = 5
n | Nn |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 4 |
5 | 5 |
6 | 6 |
7 | 7 |
8 | 8 |
9 | 9 |