lean_workbook_plus_32083

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

There are $\binom{5}{3}= 10 \textrm{ triplets}$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_32083 :
  Nat.choose 5 3 = 10   :=  by sorry

Source