Abby is adopting kittens from the pet store. if there are 18 kittens, how many ways can she choose 2 kittens?
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In this question , we have to find the postulate that is illustrated for the real numbers
The postulate is Additive inverse postulate which states that
Where a is the real number and -a is the opposite of a. It states that , if opposite of a number is added with the number, the result is 0 .