Question

A quiz has 4 questions. The first is true/false, the second has 4 choices, and the res

have 4 choices each. What is the probability of randomly guessing and getting all 4
questions correct? Write your answer decimal rounded to 4 decimal places.

Answer 1

Answer: 0.0078

Work Shown:

A = 1 way to get all questions correct

B = 2*4*4*4 = 128 ways to answer the questions

A/B = 1/128 = 0.0078125 which rounds to 0.0078

There's roughly a 0.78% chance of getting all correct answers if you randomly guess on all four questions.