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In a certain examination paper, there are n questions. For j = 1,2 ...n, there are 2n−j students who answered j or more questions wrongly. If the total number of wrong answers is 4095, then the value of n is: |
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Answer» In a certain examination paper, there are n questions. For j = 1,2 ...n, there are 2n−j students who answered j or more questions wrongly. If the total number of wrong answers is 4095, then the value of n is: |
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