Sally is completely unprepared for a three-question multiple-choice pop quiz, so she randomly guesses the answer to each questio

Question

mestny [16]

3 years ago

13

Sally is completely unprepared for a three-question multiple-choice pop quiz, so she randomly guesses the answer to each questio

n. If each question has four choices, then what is the probability that she gets at least two questions correct?

Mathematics

1 answer:

timurjin [86] · Answer 1 · 2022-02-07T05:26:25+03:00

timurjin [86]3 years ago

8 0

There are 3 questions and 4 choices.
So she has 1/4 of a chance of getting each question right.
Now if you multiply all her odds 1/4 x 1/4 it would become 1/16. Therefore she has 1/16 of a chance of getting a 2/3