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There are N questions in an exam.For i= 1, 2,..... N ,there are 2N-1 students who answered i or more questions wrongly. If total number of wrong answers is 8191, N then will be
🗓 Dec 12, 2021
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Caroline
🌐 India
Nice website
votes
Rachel
🌐 India
Answer is fine but where is solution?
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