00:01
Write the set whose elements are the first 10 composite numbers.
00:06
So we have to first define what a composite number is, and a composite number is just one that can be made up of other numbers.
00:17
So, for example, four is a composite number because it can be made up of two times two, whereas three is not composite because it can only be made up of two.
00:45
Of multiplying itself times one.
00:49
So three times one.
00:52
So the first 10 composite numbers will be four, and then six, and then eight, and then nine, because remember nine is three times three.
01:10
Next, we have 10, and then 12, and then 14.
01:17
How many is that? 1, 2, 3, 4, 5, 6, 7...