A student is required to answer 5 out of 8 questions divided into two groups each containing 4 questions. He is not permitted to attempt more than 3 from each group. In how many ways can he make the choice?

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None of these

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Solution

The correct option is C
48

The number of ways he can make a choice is = 2 $\times^{4} C_{2} \times^{4} C_{3}$ = 48

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