In my recent quest to create or catalog as many DAX equivalents for Excel functions, I coded this one with one arm tied behind my back:
MULTINOMIAL =
VAR __Table =
ADDCOLUMNS(
'Table',
"Factorial",FACT([Column1])
)
RETURN
DIVIDE(
FACT(SUMX('Table',[Column1])),
PRODUCTX(__Table,[Factorial]),
0
)
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