There are 10 true or false questions on a test. You do not know the answer to 4 of the questions, so

Discussion in 'Calculator Requests' started by math_celebrity, May 18, 2019.

Tags:
  1. math_celebrity

    math_celebrity Administrator Staff Member

    There are 10 true or false questions on a test. You do not know the answer to 4 of the questions, so you guess. What is the probability that you will get all 4 answers right?

    Probability you guess right is 1/2 or 0.5.

    Since each event is independent of the other events, we multiply 1/2 4 times:
    1/2 * 1/2 * 1/2 * 1/2 = 1/16
     

Share This Page