Question

1.) A committee would like to determine four people to office, namely, a president, vice president, secretary and treasurer. In how many possible ways can four people be elected from this class into these positions?

You are taking a 5 answer multiple choice exam. There is one question you do not know and you must guess. What is the probability of you guessing the correct answer?

Answer 1

1). No answer is possible until we know how many people
there are in "this class".

2). If there are 5 choices, and only one of them is correct,
and you close your eyes and choose one of them completely
at random, then the probability of choosing the correct one is ...

1 / 5 = 20% .