## Math Problem Statement

binomial(n,n - 3) = 3 * binomial(n,2)

## Solution

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## Math Problem Analysis

### Mathematical Concepts

Combinatorics

Binomial Coefficients

Factorial

### Formulas

Binomial coefficient formula: binom(n,k) = n! / (k!(n-k)!)

Factorial simplification

Equation solving

### Theorems

Binomial Theorem

Simplification of binomial identities

### Suitable Grade Level

Grades 10-12