A) always a rational
B) always an irrational
C) one
D) always a non-zero number
Correct Answer: D
Solution :
| Sol. [d] \[\sqrt{5}\times \sqrt{2}=\sqrt{10};\] which is an irrational number. |
| \[\sqrt{8}\times \sqrt{2}=\sqrt{16}=4;\] which is a rational number. |
| So, product of two irrational numbers will sometimes be rational and sometimes irrational but always a non-zero number. |
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