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[" 71.In a certain test,there are n ques...

[" 71.In a certain test,there are n questions.In this test "2^(n-i)" students gave wrong answers to "],[" at least i questions,where "i=1,2,....." n.If the total number of wrong answers given is "],[2047," then "n" is equal to "],[[" (A) "10," (B) "11," (C) "12," (D) "13],[" 4.Wh "10," (B) "99919" PITHERIF "]]

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