Reciprocal
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In mathematics, reciprocals are two numbers which multiply together and make 1. They are also called multiplicative inverses of each other. For example:
- 3 and 1/3 are reciprocals because 3 x 1/3 = 1
- 5/6 and 6/5 are reciprocals because 5/6 x 6/5 = 1
- - 0.2 and - 5 are reciprocals because - 0.2 x -5 = 1
- 1 and - 1 are their own reciprocals because 1 x 1 = 1 and -1 x -1 = 1
- zero does not have a reciprocal because no number times 0 is 1
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