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Mathematics 9 Online
OpenStudy (anonymous):

what kind of number is -25 rational, irrational, whole etc

Directrix (directrix):

I'm wondering what is meant by etc. Attached is a Number Family Tree to help you with classifying -25.

OpenStudy (anonymous):

Choices are rational, irrational, real, or whole number

Directrix (directrix):

Well, -25 is not a whole number because the whole numbers are the positive integers and zero. -25 is not irrational because it can be written as the ratio of two integers a/b where b is not 0. -25 = -25/1 Look at the Number Family Tree and determine if you think -25 is Real.

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