A test with 20 questions was applied to 300 people. We know that 8 questions had at least 100 right answers and the rest at least 200 right answes. Prove by contradiction that some student got at least 11 questions right.
A test with 20 questions was applied to 300 people. We know that 8 questions had at least 100 right answers and the rest at least 200 right answes. Prove by contradiction that some student got at least 11 questions right.
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A test with 20 questions was applied to 300 people. We know that 8 questions had at least 100 right answers and the rest at least 200 right answes. Prove by contradiction that some student got at least 11 questions right.
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