Nazmul is going to attend an exam where he will have to answer 4 questions out of 6 questions. In how many ways can he choose these 4 out of 6 questions? Suppose the question is divided into two groups A & B and each group contains 3 questions and he has to answer three from group A & one from group B. In how many ways he can choose 4 questions?
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pleach I need some point give me points pleach
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pleach I need some point give me points pleach pleach
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