00:01
Do one example and then i'm going to show you a bunch that are like, now i'll do two examples and then you are to do the rest.
00:08
So when i get presented something like this one, so this one is like this one.
00:17
What other one? this one is like this one.
00:21
Okay.
00:22
And then this one and this one.
00:31
Those ones are all alike.
00:33
So i'll do one example of that one.
00:35
So i'm going to use this formula, the nth term.
00:41
So i have a .n equals the first term, which is 1761, and then plus n minus 1 times d, which is the 14th term.
01:00
I'm sorry, not 14th.
01:02
So the common difference, which is 27.
01:10
So then i have 1761 plus 27n minus 27.
01:17
So then i'm going to do 1761 minus 27 is 1734 plus 27n.
01:29
So now i'm going to take this 14 and i'm going to plug it in to here.
01:35
So i have 1734 plus 27 times 14.
01:41
So 27 times 14 is 378 plus 1734.
01:54
And that's 2 ,112.
01:57
So the answer, the 14th term, is 2 ,112.
02:01
Okay? so that one is just like this one.
02:05
Now, so all these ones in blue are all alike.
02:09
Then this one, this one...