A question paper consists of three sections A, B, C having 6,4,3 questions respectively. A student has the freedom to answer any number of questions but at least one question from each section is compulsory. In how many ways can the paper be attempted by the student?

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Solution

No. of ways can the paper be attempted by the student=
$(2^{6} - 1)$ $(2^{4} - 1)$ $(2^{3} - 1)$ = 63 x x15 x 7 = 6615

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A question paper consists of three sections A, B, C having 6,4,3 questions respectively. A student has the freedom to answer any number of questions but at least one question from each section is compulsory. In how many ways can the paper be attempted by the student?

No. of ways can the paper be attempted by the student=(26−1) (24−1) (23−1) = 63 x x15 x 7 = 6615

No. of ways can the paper be attempted by the student=
$(2^{6} - 1)$ $(2^{4} - 1)$ $(2^{3} - 1)$ = 63 x x15 x 7 = 6615