Basic Maths

Which of the following is not a rational number

• $\sqrt{3}$

• $\sqrt{4}$

• 4.7

• 1.3333

Which of the following is irrational number

• $\frac{22}{7}$

• $\pi$

• 1.52

• $\sqrt{9}$

Which of the following is not a real number

• $\pi$

• $\sqrt{2}$

• $\sqrt{-1}$

• $\frac{22}{7}$

L.C.M of 2 and 4 is

• 2

• 4

• 8

• 1

L.C.M of 3 and 5 is

• 3

• 5

• 15

• 1

 $L.C.M\ of\ \sqrt{2},\ \sqrt{3}\ is$  

•  $\sqrt{6}$  

•  $\sqrt{2}$  

•  $\sqrt{3}$  

• does not exist

 $L.C.M\ of\ \pi\ and\ \pi^2\ is$  

•  $\pi$  

•  $\pi^2$  

•  $\frac{22}{7}$  

• does not exist

 $L.C.M\ of\ \pi\ and\ 5\pi\ is$  

•  $\pi$  

•  $5\pi$  

• 5

• does not exist

 $If\ \sqrt{x}\ =\ -3\ then\ x\ =$  

• 9

• -3

• 3

• No such value of x possible

 $\sqrt{-1}\ \times\ \sqrt{-1}\ is$  

• 1

• -1

•  $\pm1$  

• does not exist