The number of all possible selections which a student can make for answering one or more questions o….

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The number of all possible selections which a student can make for answering one or more questions out of eight given questions in a paper, where each question has one alternate option, is

Options :-

1. ⁸C₁ + ⁸C₂ + ⁸C₃+ ..... + ⁸C₈
2. 2 × 2⁸
3. 3⁸
4. 3⁸ - 1

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