Find the total number of ways of answering 5 objective-type question, each question having 4 choices.
Given: 5 objective-type question, each question having 4 choices.
To find: the number of ways of answering them.
Each objective-type question has 4 choices.
So the total number of ways of answering 5 objective-type question, each question having 4 choices=4 × 4 × 4 × 4 × 4=45