00:01
Hello, so here we're asked which of the following numbers are integers.
00:04
One integer is just a whole number basically, positive or negative.
00:07
So if we make the number one, we could actually kind of think of all the integers.
00:12
So we can maybe have zero in the middle, not really a middle because it's forever, but then going to the right are just the natural numbers.
00:19
So one, two, three, four, right? and so on.
00:23
But then every natural number has an opposite, really it's called its additive inverse, but like for one, the opposite of one would be negative one, opposite of two would be negative two, opposite of three would be negative three, and then negative four and so on.
00:35
And those go forever to the left.
00:37
And then so an integer is one of those numbers, either a whole number, so positive or negative.
00:42
But if there's a decimal after it, well, that's going to be between two integers...