Urgent question

Question

Find the probability of correctly answering the first 3 questions on a multiple choice test if random guesses are made and each question has 6 possible answers.

Select one:

A. 

B. 2

C. 

D. 

Answer 1

Lindsey,

The probability of guessing the correct answer once is 1/6, assuming the questions are independent the probability of guessing 3 in a row correct is (1/6)(1/6)(1/6) =1/216 so the answer is D. Got it?

Jim

Answer 2

Each question has a 1/6 chance of being guessed correctly. Each question is an independent event so that their probabilities multiply.

So the answer is 1/6 x 1/6 x 1/6 = 1 / 216