![]() ![]() There are unlimited books for practicing & learning about permutations & combinations. Here are the formulas: Permutation or CombinationĬ (n+ r -1 ,r) = (n + r -1 )! / r! (n – 1) ! It is important to remember the formulas for permutations & combinations. Permutation & Combination Practice Questions Download Formulas for Permutation & Combinations If the team has to include at most one boy the number of ways selecting the team is A team of 4 members is to be selected from this club including the captain (from among these four members) for the team.
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