$3\mathrm{.}1.$ Your colleague is developing a program that tracks customer orders in an online store. They have named the variable used for storing the product quantity as $"*$quantity in stock." Explain what's wrong with this variable name and suggest a more appropriate name that follows standard variable naming conventions.

$(5$ Marks$)$

$3\mathrm{.}2.$ Are the following examples of expressions or equations? Justify your answer

a$.,x=Y+\frac{Z}{3}A$

$b.,x=Y+\frac{Z}{3}$

$(4$ Marks$)$

$3\mathrm{.}3.$ Create a flowchart for the problem $of$ finding the largest $of$ three $(3)$ numbers.

$(11$ Marks$)$