you should expect to get a 20%
because there are 5 answer choices and you can pick one, you have a 1/5 chance of getting the question right. with this knowledge, you can expect that youll get 1/5 of the questions right, and when you convert 1/5 to a percent, by dividing 1 by 5 and multiplying that decimal by 100, you get 20, which is where you get the 20%
