Which Multiplexing technique transmits analog signals?

Which of the following terms is used to describe the movement of an item with the help of mouse to a new position on screen?

What displays the content of the active cell in Excel?

What should come in the place of the question mark in the following question?

$\sqrt{1849}\times \sqrt{?}=2451$

What should come in the place of the question mark(?) in the following question?

$\frac{3}{4}\times \frac{2}{7}\times ?=2268$

What should come in the place of the question mark(?) in the following question?

$\frac{4.5\times 0.5}{0.015}=?$

What should come in the place of the question mark (?) in the following question?

$5\frac{1}{7}+1\frac{11}{14}\times \frac{25}{45}=?$