In a certain test, there are n questions. In this test, `2^(n-k)` students gave wrong answers to atleast k questions, where k=1,2,3, . . ,. If the total number of wrong answers given in 127, then the value of n is

In a certain test, there are n questions. In this, 2^( n-r ) students gave wrong answers to at least (r) questions, where r=0,1,2,….n . If the total number of wrong answer is 4095, then the value of n is

In a certain test, there are n question. In the 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

In a certain test, there are n question. In the 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

In a certain test,there are n question.In the 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

In a test , there were n number of question. In the test 2^(n - i) students gave wrong answers to i number of question , where i = 1, 2, 3,......, n. If the total number of wrong answer of wrong answer given is 2047, then n is