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Selection of Exactly $$r$$ Objects
## Formula
The number of ways to select exactly $$r$$ objects from $$n$$ distinct objects is:
$${}^nC_r$$
## Usage
- Used whenever the selection size is fixed and order does not matter.
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Selection of Exactly $$r$$ Objects
## Formula
The number of ways to select exactly $$r$$ objects from $$n$$ distinct objects is:
$${}^nC_r$$
## Usage
- Used whenever the selection size is fixed and order does not matter.
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