00:01
The first thing to notice about this problem, 2 plus 5 plus 8, is that we have an arithmetic series.
00:10
And we have two formulas for the arithmetic series.
00:14
The first is just to figure out how many terms are happening.
00:19
And the second is for the sum, where the sum over a certain number of terms is equal to n divided by 2 times the first term plus the last term.
00:29
So your final answer is going to be whatever you come with over here.
00:34
And the issue that we have right now is we don't know how many terms there are.
00:37
We do know that the first term is two, though.
00:40
And if you reread the problem, it goes all the way to 326.
00:45
So that's the last term, first and last.
00:51
So let's transition over to this formula...