Number System 1

 $2\sqrt{3}+\ \sqrt{3}$  is equal to 

•  $2\sqrt{6}$  

• 6

•  $3\sqrt{3}$  

•  $4\sqrt{6}$  

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

•  $\sqrt{15}$  

•  $\sqrt{150}$  

•  $\sqrt{50}$  

• 5

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

•  $\frac{\sqrt{7}+2}{3}$  

•  $\frac{\sqrt{7}-2}{3}$  

•  $\frac{\sqrt{7}+2}{5}$  

•  $\frac{\sqrt{7}-2}{5}$  

After rationalize the denominator of  $\frac{7}{3\sqrt{3}-2\sqrt{2}}$ , we get the denominator as 

• 13

• 19

• 5

• 37

 $64^{\frac{1}{3}}$  is equal to

• 8

• 4

• 12

• 6

 $a^{-1}$  is equal to 

• a

• 1

• 0

•  $\frac{1}{a}$  

 $\left(3^{\frac{1}{2}}\right)^{\frac{1}{3}}$  is equal to

•  $3^{\frac{1}{2}}$  

•  $3^{\frac{1}{3}}$  

•  $3^{\frac{1}{5}}$  

•  $3^{\frac{1}{6}}$  

What is the decimal equivalent of 4/25?

• 16%
• 0.16
• 1.6
• 0.08

Which of these rational numbers is farthest to the left of a number line?

• -8/3
• -3
• -2.3
• -10/7

Zero can be classified as all of the following except which?

• Whole
• Rational
• Integer
• Natural