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lean4game/server/adam/Adam/Levels/SetTheory/L21_Summary.lean

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import Adam.Metadata
import Mathlib.Data.Set.Basic
import Mathlib.Algebra.Parity
import Mathlib.Tactic.Ring
Game "Adam"
World "SetTheory"
Level 21
Title ""
Introduction
"
"
open Set
Statement
"" :
3 ∈ {n : | Odd n} := by
rw [mem_setOf]
use 1
ring
NewTactic constructor intro rw assumption rcases simp tauto trivial