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So now that you've completed your chart, lets take a look at the answers. Lets
start out by looking at the numbers -1 and -9. They're both integer, and negative
integer. Those are the 2 that should be checked. So now lets take a look at 0.
There are 4 boxes you should have checked, for zero. You should have checked integer,
zero, whole number, and non-negative integers. So now let's look at the number
7 and 12. You should have had checked integer, positive integer, natural number,
whole number, and non-negative integers for both of them. Let's look at the last
category of numbers. The numbers 3/4, .5, and pi. Those don't fit into any category
so you should of checked none of the above, for 3/4, .5, and pi.