What is the probability of getting at least 6 correct answer out of 10 in objective test?

210/1024 (a bit over 1/5). Assuming that there’s 50\% chance to guess any answer right and that answers are unrelated, the number of possible answer combinations which have exactly 6 answers is 10! / (4!

What is the probability of getting all questions correct if you answer the questions by random guessing?

If there were just one question, then the probability of guessing correctly would be 1/3. Since all the answers are independent (the answer to one question has no bearing on the answers to the others), then this is the case with each question, so the chances of guessing all answers correctly is 1/3 × 1/3 × 1/3 = 1/27.

What is the probability of getting 3 out of 5 questions right?

If you are guessing on these questions, the probability of getting any one of them correct is 1 out of 5, or 1/5. If you guess on each of the three questions, the probability is (1/5)3 = 1/125.

What is the probability of getting at least six right answers?

If it were at least six, we can ignore 4 problems and focus on 6 of them. The probability of getting one correct is 1/2, as is each other of the 6. Multiply them all together to get the probability that you get at least six right. You can ignore the other four because it doesn’t matter what those are.

How many possible answers are there to a multiple choice quiz?

A student taking a multiple choice quiz with 6 questions. Each question has 5 possible answers. A student guesses at each question. What is the probability that the student gets 4 answers correct? – Quora A student taking a multiple choice quiz with 6 questions. Each question has 5 possible answers. A student guesses at each question.

What is the probability of getting 5 Quests right by guessing?

To get exactly 5…. The probability of getting a questIon right by guessing is 1/4. With wrong answers, it’s 3/4. We have to account for the different combinations of 5 correct answers and 10 wrongs ones. We could make a list, but that’s tedious and boring.

What is the probability of getting 6 results in exhaustive ways?

Now, consider that there are 10 trials with 2 outcomes as true and false. So, exhaustive ways are 2^10=1024 ways. That would depend if you meant exactly six, or at least six. If it were at least six, we can ignore 4 problems and focus on 6 of them. The probability of getting one correct is 1/2, as is each other of the 6.