Number Systems ...

The value of $[2-3(2-3)^{-1}]^{-1}$ is __________.

Which one of the following is a rational number?

The conjugate of the binomial surd $\dfrac {1}{2}x + \dfrac {1}{2}\sqrt {y}$ is?

Simplify:-
$(2\sqrt 2\times 3\sqrt 5)\div 2$ .

From the pairs of number given below, whose product is a natural number?

Which of the following numbers has the terminal decimal representation?

Find two rational numbers lying between $\dfrac{-1}{3}$ and $\dfrac{1}{2}$.

The rational number that lies between $\dfrac{3}{7}$ and $\dfrac{2}{3}$ is

Which of the following is irrational

Simplify $2\sqrt{5}$ + $10\sqrt{5}$ + $25\sqrt{5}$+  $31\sqrt{5}$.