COMBIN function

Returns the number of combinations for a given number of items. Use COMBIN to determine the total possible number of groups for a given number of items.



Number     is the number of items.

Number_chosen     is the number of items in each combination.


  • Numeric arguments are truncated to integers.
  • If either argument is nonnumeric, COMBIN returns the #VALUE! error value.
  • If number < 0, number_chosen < 0, or number < number_chosen, COMBIN returns the #NUM! error value.
  • A combination is any set or subset of items, regardless of their internal order. Combinations are distinct from permutations, for which the internal order is significant.
  • The number of combinations is as follows, where number = n and number_chosen = k:





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Formula Description (Result)
=COMBIN(8,2) Possible two-person teams that can be formed from 8 candidates (28)
Applies to:
Excel 2007