Translating multiplication using times, 17 times a number

The video tutorial explains the use of multiplication when dealing with 'times' in math problems. It introduces the concept of using a variable to represent an unknown number and demonstrates how to write algebraic expressions without needing to show the multiplication symbol explicitly. The example used is 17 times a number, represented as 17A.

What types of numbers can the variable 'A' represent according to the text?

Why is it unnecessary to represent the multiplication symbol when multiplying a number by a variable?