Mathematics

9th

grade

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Number system

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

     23+ 32\sqrt{3}+\ \sqrt{3}  is equal to 

     262\sqrt{6}  

    6

     333\sqrt{3}  

     464\sqrt{6}  

  • 2. Multiple Choice
    30 seconds
    1 pt

     10 ×5\sqrt{10}\ \times\sqrt{5}  is equal to

     15\sqrt{15}  

     150\sqrt{150}  

     50\sqrt{50}  

    5

  • 3. Multiple Choice
    30 seconds
    1 pt

    The number obtained on rationalizing the denominator of  172\frac{1}{\sqrt{7}-2}  is

     7+23\frac{\sqrt{7}+2}{3}  

     723\frac{\sqrt{7}-2}{3}  

     7+25\frac{\sqrt{7}+2}{5}  

     725\frac{\sqrt{7}-2}{5}  

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