Which of the following are valid hexadecimal numbers? how do you know?
ace f32e babe bleed 4567

ace f32e BABE 4567

Explanation:

A hexadecimal number is a base 16 number and consists of digits [0,1,2,3,4,5,6,7,8,9] and characters [A,B,C,D,E,F].

ace is hexadecimal as it consists of characters a,c,e

f32e is hexadecimal as it consists of characters f,e and digits 3,2

BABE is hexadecimal as it consists of characters B,A,E.

BLEED is not hexadecimal as it contains character L which is invalid.

4567 is hexadecimal as it contains digits 4,5,6,7.

since it can be assumed that what aslam is making is a template by compiling all the commonly used excel formatting in several worksheets in an excel document, aslam can choose to save it using the .xltx or .xltm format instead. thus, aslam can distribute the templates he has made to his team members in an easier manner.