The quotient of a number and 2 is less than 28

I'm going to assume that you want this written as a mathematical expression. Let's simply break the question apart to create our expression.

We know we are going to be dealing with division because of the words "the quotient of." Let's consider "a number" to be .

Now, the problem is asking us to represent a quotient of "a number" and "2", which would be .

Finally, the problem says that this, , is less than 28. To represent this, we can write the following expression: