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# Probability

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Thank you :)

May 11, 2021

The probability that you answer any question correctly is 0.6, while the probability of getting it wrong is 0.4. (where 1 means certain while 0 means impossible). The probability that you get exactly 4 questions correct is $$0.6\cdot0.6\cdot0.6\cdot0.6\cdot0.4$$, but that is not the final answer, because there are 5 permutations of 4 correct answers and 1 incorrect, so we need to multiply that by 5 to get: $$0.6\cdot0.6\cdot0.6\cdot0.6\cdot0.4\cdot5$$.