How many rational numbers exist between any two distinct rational numbers?

If $n=2^3\times 3^4\times 7\times15^6$, then find the number of consecutive zeros in natural number n

1 $\div$ 28 is _______

If a cellphone costs Rs.$999$. What is the cost of $12$ such cellphones?

64 $\div$ 1 is ______

$ \displaystyle \frac{4}{-9}   $ and $ \displaystyle \frac{-16}{36}   $ represent the same rational number?

Solve it 
$\dfrac {\left( {{{\left( {245 + 232} \right)}^2} - {{\left( {245 - 232} \right)}^2}} \right)}{\left( {245 + 232} \right)}$

Let $Q = \dfrac{x}{y}$ where $x$ and $y$ are real numbers. If both $x$ and $y$ are increased equally then

The value of $0.\bar { 1 } +0.0\bar { 1 } +0.00\bar { 1 } $ is equal to 

 $\displaystyle \frac{3x}{2}-\frac{x}{4}=2$. Find value of x

Find the remainder when $105!$ is divided by $214.$ 

Evaluate: $625\div 125$

$\displaystyle  50 -\frac { 1 }{ 4 }\times  ........ =0$ 

$\displaystyle 40-  \frac { 1 }{ 2 }\times ........ = 1 $ 

Evaluate: $625\div 5=$

Evaluate: $625\div 25$

$\frac {171\tfrac {3}{4}\times 171\tfrac {3}{4}-91\tfrac {3}{4}\times 91\tfrac {3}{4}}{171\tfrac {3}{4}+91\tfrac {3}{4}}$ is equal to