39 Combinations of 6

Publish date: 2024-07-16
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Evaluate the combination:

39C6

Combination Definition:

A unique order or arrangement

Combination Formula:
nCr  =  n!
  r!(n - r)!

where n is the number of items
r is the unique arrangements.

Plug in n = 39 and r = 6
39C6  2  39!
  6!(39 - 6)!

Factorial Formula:

n! = n * (n - 1) * (n - 2) * .... * 2 * 1

Calculate the numerator n!:

n! = 39!

39! = 39 x 38 x 37 x 36 x 35 x 34 x 33 x 32 x 31 x 30 x 29 x 28 x 27 x 26 x 25 x 24 x 23 x 22 x 21 x 20 x 19 x 18 x 17 x 16 x 15 x 14 x 13 x 12 x 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

39! = 20,397,882,081,197,441,587,828,472,941,238,084,160,318,341,120

Calculate (n - r)!:

(n - r)! = (39 - 6)!

(39 - 6)! = 33!

33! = 33 x 32 x 31 x 30 x 29 x 28 x 27 x 26 x 25 x 24 x 23 x 22 x 21 x 20 x 19 x 18 x 17 x 16 x 15 x 14 x 13 x 12 x 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

33! = 8,683,317,618,811,885,938,715,673,895,318,323,200

Calculate r!:

r! = 6!

6! = 6 x 5 x 4 x 3 x 2 x 1

6! = 720

Calculate 39C6
39C6  =  20,397,882,081,197,441,587,828,472,941,238,084,160,318,341,120
  720 x 8,683,317,618,811,885,938,715,673,895,318,323,200

39C6  =  20,397,882,081,197,441,587,828,472,941,238,084,160,318,341,120
  6,251,988,685,544,558,234,775,137,902,722,228,944,896

39C6 = 3,262,623

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Excel or Google Sheets formula:
Excel or Google Sheets formula:=COMBIN(39,6)

What is the Answer?

39C6 = 3,262,623

How does the Permutations and Combinations Calculator work?

Free Permutations and Combinations Calculator - Calculates the following:
Number of permutation(s) of n items arranged in r ways = nPr
Number of combination(s) of n items arranged in r unique ways = nCr including subsets of sets
This calculator has 2 inputs.

What 2 formulas are used for the Permutations and Combinations Calculator?

nPr=n!/r!
nCr=n!/r!(n-r)!

For more math formulas, check out our Formula Dossier

What 4 concepts are covered in the Permutations and Combinations Calculator?

combinationa mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter
nPr = n!/r!(n - r)!factorialThe product of an integer and all the integers below itpermutationa way in which a set or number of things can be ordered or arranged.
nPr = n!/(n - r)!permutations and combinations

Example calculations for the Permutations and Combinations Calculator

Permutations and Combinations Calculator Video


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