olymmath

HMMT 2001 U8

  • Guts
  • Answer

Compute 1⋅2+2⋅3+⋯+(n−1)n1 \cdot 2+2 \cdot 3+\cdots+(n-1) n.

Dataset text NuminaMath olympiads. Quoted with source.

Show the answer

\frac{(n-1) n(n+1)}{3}

Solutions

No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.

Add a solution

Similar problems

These problems have the most words in common with this statement.

Locator hmmt/2001/u8 · Tag GM6XA4F77Q · Edit this page on GitHub · Keys: j next, k previous