5%

15%

10%

20%

There is no rational number

There is exactly one rational number

There are infinitely many rational numbers

There are only rational numbers and no irrational numbers

$\frac{\sqrt{12}}{\sqrt{3}}$

$\sqrt{7}$

$\sqrt{81}$

a-b > c

c > a+b

c = a+b

c < a+b

17 m

23 m

21 m

17 cm

17 and 8

16 and 9

18 and 7

15 and 10

$3x^2-2x\ +7$

$\sqrt{2}x^2\ +\ \sqrt{3}x\ +\ \sqrt{6}$

$\frac{5x^3}{2x}\ +\ 3x^2\ +\ 8$

$3x\ +\ \frac{2}{x}\ +\ 7$

 $60x^{3\ }y^3\ z^3$  

 $60x^2y^2z^2$  

 $60xyz$  

none of these

132

124

128

120

$30\degree$

$60\degree$

$150\degree$

none of the above

 $60\degree,40\degree,80\degree$  

 $60\degree,60\degree,60\degree$  

 $50\degree,80\degree,50\degree$  

 $40\degree,80\degree,60\degree$