00:01
We have a set of dominoes and we want to find some probability if we pick one at random.
00:06
Okay, so we have 28 dominoes here.
00:09
So any individual domino has a 1 in 28 chance of being chosen.
00:18
So i'm then going to look at the possible sums we might get on these dominoes.
00:23
So we have zero as our lowest value.
00:27
You get two nothings.
00:28
And then it will go up or whip to 12.
00:39
And i'm going to display the probability of, of getting a domino with this total number of dots as being out of 28.
00:46
So 0 is only one domino that has that, so that's 1 out of 28.
00:51
For 1, there's only one of those as well.
00:54
For 2, there's 2 of them.
00:56
You could have 0 2, or 1, 1.
00:59
For 3, you could have 0, 3, 1, 2, is there a 21? doesn't look like it, so there's 2 of those as well.
01:09
For 12, there's only one possibility, 2 6es.
01:11
For 11, there's one possibility, 5, 6.
01:16
For 10, there's 5, 5, or 4, 6.
01:22
For 9, there's 4, 5, and 6, 3.
01:30
For 4, there's 04, 1, 3, or 2, 2.
01:38
For 5, there is 05, 14, 2, 3, that's it, so it's 3 of them.
01:48
For six, there is 06, there is 1 .5, there is 24, and there's 3, 3.
01:56
So that's 4.
01:57
For 7, there is 1 6, 25, 3, 4, and that is it.
02:09
And for 8, there is 26, 35, 4...