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OpenStudy (anonymous):
The set of rational numbers is closed under multiplication. True or false?
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jimthompson5910 (jim_thompson5910):
take any two rational numbers and multiply them what do you get?
OpenStudy (anonymous):
its true
jimthompson5910 (jim_thompson5910):
good, you'll always get a rational number when you multiply any two rational numbers
jimthompson5910 (jim_thompson5910):
(rational) * (rational) = rational
OpenStudy (anonymous):
thank you (:
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