Question : The average of seven consecutive numbers is 20. The largest of these numbers is:

Question : If $\left(x^2 - \frac{1}{x^2}\right) = 4 \sqrt{6}$ and $x>1$, what is the value of $\left(x^3 - \frac{1}{x^3}\right)?$

Question : The height of stumps in cricket is ____.

Question : Of the 3 numbers whose average is 22, the first is $(\frac{3}{8 })^{th}$ of the sum of the other 2. What is the first number?

Question : Simplify the given expression.
$18 \div 3$ of $2 \times 5+72 \div 18$ of $2 \times 3-4 \div 8 \times 2$