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# Permutations and Combinations (Metric)

## Class Details

**Tom
Baker**

Learn, or revise, permutations and combinations, an the binomial theorem.

## Units

### Permutations and Combinations

The number of permutations of \(r\) objects from \(n\), and the number of choices of \(r\) objects from \(n\).

The expansion of \((a+b)^n\) for positive integer \(n\).

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