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combination questions

May 25, 2018 · 3) The student chooses to solve only three questions, can choose in 4 C 3 3) The student chooses to solve all four questions, can choose in 4 C 4 So total ways are. 4 C 1 + 4 C 2 + 4 C 3 + 4 C 4 =2 4-1 = 15 ways We know sum of binomial coefficients from n C 0 to n C n is 2 n. More practice questions on permutation and combination : Quiz on

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