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<<< tex
\mathbf{C}(n,k) = \mathbf{C}_k^n = {}_n\mathbf{C}_k = \binom{n}{k} = \frac{n!}{k!\,(n -k)!}
>>> native
[ EStyled TextNormal [ EStyled TextBold [ EIdentifier "C" ] ]
, ESymbol Open "("
, EIdentifier "n"
, ESymbol Pun ","
, EIdentifier "k"
, ESymbol Close ")"
, ESymbol Rel "="
, ESubsup
(EStyled TextNormal [ EStyled TextBold [ EIdentifier "C" ] ])
(EIdentifier "k")
(EIdentifier "n")
, ESymbol Rel "="
, ESub (EGrouped []) (EIdentifier "n")
, ESub
(EStyled TextNormal [ EStyled TextBold [ EIdentifier "C" ] ])
(EIdentifier "k")
, ESymbol Rel "="
, EDelimited
"("
")"
[ Right (EFraction NoLineFrac (EIdentifier "n") (EIdentifier "k"))
]
, ESymbol Rel "="
, EFraction
NormalFrac
(EGrouped [ EIdentifier "n" , ESymbol Ord "!" ])
(EGrouped
[ EIdentifier "k"
, ESymbol Ord "!"
, ESpace (1 % 6)
, ESymbol Open "("
, EIdentifier "n"
, ESymbol Bin "\8722"
, EIdentifier "k"
, ESymbol Close ")"
, ESymbol Ord "!"
])
]
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