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Equation to find out how many combinations are possible

r = 4 (item sub-set) n = 18 (larger item) Therefore, simply: find “18 Choose 4” We know that, Combination = C (n, r) = n!/r! (n–r)! 18! 4! ( 18 − 4)! = 18! 14! × 4! =

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What is the mathematical equation to determine the

To calculate combinations, we will use the formula n C r = n! / r! * ( n - r )!, where n represents the total number of items, and r represents the number of items being chosen at a

Difference Between Permutation and Combination (with Example)

Combinations Formula: C ( n, r) = n! ( r! ( n − r)!) For n ≥ r ≥ 0. The formula show us the number of ways a sample of “r” elements can be obtained from a larger set of “n” distinguishable objects where order does not matter and repetitions are


Solving math equations can be challenging, but it's also a great way to improve your problem-solving skills.

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Permutation ( Definition, Formula, Types, and Examples)

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Combinations and permutations (Pre-Algebra, Probability and

There are 496 combinations without repetition. Here’s the formula: 32!/ (32-2)!*2! = 32*31/2! = 496. Thanks! We're glad this was helpful. Thank you for your feedback. As a small

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Combinations and Permutations

We need to determine how many different combinations are there: C (12,5) = 12!/ (5! * (12-5)!) = 12!/ (5! * 7!) = 792. You can check the result with our nCr calculator. It will list all possible combinations, too! However, be aware