Real Numbers - Class 9

 $2-\sqrt{7}is\$  

• a rational number

• an irrational number 

• an integer

• a natural number

Tags

CCSS.HSN.RN.B.3

 $A\ rational\ number\ between\ \frac{1}{7}\ and\ \frac{2}{7}\ is$  

•  $\frac{1}{14}$  

•  $\frac{2}{21}$  

•  $\frac{5}{14}$  

•  $\frac{5}{21}$  

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

 $if\ x=5\ and\ y=2,\ find\ the\ value\ of\ \ \left(x^y+y^x\right)$  

• 37

• 67

• 47

• 57

Tags

CCSS.6.EE.A.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

•  $\frac{\sqrt{7}+2}{3}$  

•  $\frac{\sqrt{7}-2}{3}$  

•  $\frac{\sqrt{7}+2}{5}$  

•  $\frac{\sqrt{7}-2}{5}$  

Tags

CCSS.HSN.RN.A.2

The number obtained on rationalizing the denominator of  $\frac{3}{\sqrt{3}}$  is

• 3

•  $\frac{\sqrt{3}}{3}$  

•  $\sqrt{3}$  

•  $3\sqrt{3}$  

 $a^{-1}$  is equal to 

• a

• 1

• 0

•  $\frac{1}{a}$  

Tags

CCSS.8.EE.A.1

 $2^{\frac{1}{3}}\times\ 2^{\frac{1}{6}}$  is equal to

• 2

•  $2^{\frac{1}{2}}$  

•  $2^{\frac{1}{3}}$  

• 3

Tags

CCSS.HSN.RN.A.2

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

•  $3^{\frac{1}{2}}$  

•  $3^{\frac{1}{3}}$  

•  $3^{\frac{1}{5}}$  

•  $3^{\frac{1}{6}}$  

Tags

CCSS.HSN.RN.A.2