Difference between revisions of "Documentation/How Tos/Calc: COMBINA function"
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== COMBINA == | == COMBINA == | ||
Returns the number of ordered combinations of a subset of items. | Returns the number of ordered combinations of a subset of items. | ||
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=== Syntax: === | === Syntax: === | ||
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:: <tt>'''setsize!/(setsize-subsetsize)!'''</tt> | :: <tt>'''setsize!/(setsize-subsetsize)!'''</tt> | ||
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=== Example: === | === Example: === | ||
<tt>'''COMBINA(3,2)'''</tt> | <tt>'''COMBINA(3,2)'''</tt> | ||
: returns <tt>'''6'''</tt>. | : returns <tt>'''6'''</tt>. | ||
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=== See also: === | === See also: === | ||
Revision as of 07:02, 2 March 2008
COMBINA
Returns the number of ordered combinations of a subset of items.
Syntax:
COMBINA(setsize; subsetsize)
- setsize is the number of items in the set.
- subsetsize is the number of items to choose from the set.
- COMBINA returns the number of ways to choose these items, where the order of choosing is important. For example if there are 3 items A, B and C in a set, you can choose 2 items in 6 different ways, namely AB, BA, AC, CA, BC and CB.
- COMBINA implements the formula:
- setsize!/(setsize-subsetsize)!
Example:
COMBINA(3,2)
- returns 6.
