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Grade 12th passAlgebra

out of 2n+1 students, n are to be awarded scholarship. number of ways in which at least one student ets scholarship is 63. find out how many students are recieving the scholarship.

Profile image of TUSHAR RANJAN
9 Years agoGrade 12th pass
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1 Answer

Profile image of Vikas TU
9 Years ago
No. of ways for selecting atleast 1 is = > 2^n – 1
and 
2^n – 1 = 63 given.
n = 6
and it is also said that:
2n + 1= 6 
n = 2.5 cant be fractional therfore
it would 2 or 3.

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