Answer:
0.733 repeating
Step-by-step explanation:
use your calculator
We call:

as the set of <span>the first 51 consecutive odd positive integers, so:
</span>

Where:





<span>and so on.
In mathematics, a sequence of numbers, such that the difference between two consecutive terms is constant, is called Arithmetic Progression, so:
3-1 = 2
5-3 = 2
7-5 = 2
9-7 = 2 and so on.
Then, the common difference is 2, thus:
</span>

<span>
Then:
</span>

<span>
So, we need to find the sum of the members of the finite series, which is called arithmetic series:
There is a formula for arithmetic series, namely:
</span>

<span>
Therefore, we need to find:
</span>
Given that

, then:

Thus:

Lastly:
Answer:
I think that's right. I checked my answer and proved it on that sheet.
Usually its easier to subtract numbers written vertically because of the sheer fact that you're just taking away instead of adding on. If you have basic idea about adding then you should understand subtracting easier. But, because most schools teach adding first its easier for some.
20 p + 5p
10 p + 10p + 5p
10p + 10p + 1p + 1p + 1p +1p +1p
20p + 1p + 1p + 1p + 1p + 1p
2p + 2p + 2p + 2p + 2p + 2p +2p +2p + 2p + 2p + 2p + 2p + 1p