00:01
For this question, we're asked to form rows 8 to 10 of pascal's triangle.
00:06
So let's start with row 8.
00:10
And if you want, you can actually start with row 1.
00:13
Then you can get all the numbers just by adding up the numbers that are above the number that you want.
00:21
But we're going to start with row 8.
00:23
So this is going to be, and we're going to be using the binomial to get this roll of numbers.
00:29
So this will be 8 -2, 8 -2, 8 -chews -1, 8 -choice -2, 8 -chew -3, and so on, all the way to 8 -chose -8.
00:42
So which means our numbers are going to be 8 -1, which is 1.
00:51
Sorry, 8 -2 -1, that'll be 8, and then 8 -2 -2 is going to be.
00:59
You can use a calculator for this.
01:02
So that'll be 28.
01:06
And then we have 8 choose 3, which is 56.
01:13
And then we have 8 choose 4, which is 70.
01:19
And then we can use the fact that a choose 5 is going to be the same as 8 choose 3...