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lorasvet [3.4K]
3 years ago
12

"a test has 5 multiple choice questions with four choices with one correct answer each. if we just randomly guess on each of the

5 questions, what is the probability that you get at least 1 questions correct?"
Mathematics
1 answer:
diamong [38]3 years ago
3 0
1 out if 20 you would get right

There is 5 questions 4 answers to pick from so 5 times 4 is 20

Then they said what is the probability of only getting one answer right

So the answer would be 1 out of 20 1/20
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1- Leave the 1st case empty

2- Write on the 1st row each element of the trinomial in each case

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----------- ║-----------------------------------------------------
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----------- ║---------------------------------------------------
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------------║----------------------------------------------------
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2 years ago
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