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A question paper has 6 questions. How many ways does a student have to answer if he wants to solve at least one question?

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A question paper has 6 questions. How many ways does a student have to answer if he wants to solve at least one question?

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Every question is ‘SOLVED’ or ‘NOT SOLVED’.

There are 6 questions.

Number of outcomes = 26

This number includes one case when the student solves NONE of the questions.

∴ Required number of ways = 26 – 1 = 64 – 1 = 63

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