Question

You are taking a true/false quiz with 9 questions. What is the probability of getting all 9 questions correct?​

Answer 1

Answer:

If you guess do this -

.5(9)

Basically about a 4.5% chance of getting all right.

Answer 2

Answer:

Step-by-step explanation:

each question has 2 answer choices, so 1 or the 2 is correct, and to get all 9 in a row correct would be like this

1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2 x 1/2

because theres a 1 in 2 chance of getting each question right, and there are 9 questions

1/2^9 = 0.00195 = 0.195%