Can someone please explain why is that the correct answer?
Thank you
Thank you
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n questions, 2 answers and only one of them is correct.
If player guesses only, his chance of getting all n questions correct is (1/2)^n
(1/2)^n < 1/1000
(1/2)^10 = 1/1024
(1/2)^5 = 1/32
