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OpenStudy (anonymous):
If the product of two numbers is positive, then the two numbers must both be positive. Give a counterexample.
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Parth (parthkohli):
No! What if you have -1 * -1?
hero (hero):
-8 *-6
Parth (parthkohli):
The product is positive, but the numbers are NOT positive.
Parth (parthkohli):
In general, product of ANY two negative numbers can be a counterexample of this situation.
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