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Multinomial Coefficient
## Formula
The coefficient of $$a^pb^qc^r$$ in:
$$(a+b+c)^n$$
where:
$$p+q+r=n$$
is:
$$\frac{n!}{p!q!r!}$$
## Usage
- Used to find the coefficient of a particular term in the expansion of a trinomial.
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Multinomial Coefficient
## Formula
The coefficient of $$a^pb^qc^r$$ in:
$$(a+b+c)^n$$
where:
$$p+q+r=n$$
is:
$$\frac{n!}{p!q!r!}$$
## Usage
- Used to find the coefficient of a particular term in the expansion of a trinomial.
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