00:01
Hello, so here we let the number of high technology stocks presented by analysis is five.
00:07
So the number of airline stocks presented by analysis is five, and let a then denote the number of high technology stocks, and let b denote the number of airline stocks.
00:17
So the total number of possible ways of high technology stocks using our permutation.
00:24
Rural, we get the number of ways of a is going to be five factorial divided by five minus three vector.
00:30
So that's going to be equal to 120, which is 5 factorial divided by just 2 factorial, which is 2.
00:37
That's going to be 60.
00:39
So, and we have the number of ways of airline stocks.
00:45
So the number of ways of b, what b is the airline stocks.
00:48
Again, this is also 5 factorial divided by 5 minus 3 factorial, which again is equal to 60.
00:57
So then calculating the probability of the high technology stocks, p of a and p of b...