how many tiles in american mahjongIndiana‑north‑west‑lake‑michigan‑shore‑urban‑community‑recreation‑center‑program‑directors‑in‑Gary‑add‑mahjong‑game‑sessions‑to‑their‑adult‑leisure‑activity‑program‑roster‑to‑provide‑local‑citizens‑with‑an‑affordable‑engaging‑indoor‑group‑social‑activity‑option‑that‑supports‑mental‑exercise‑and‑builds‑strong‑positive‑inter‑personal‑community‑connections‑among‑neighborhood‑resident‑participants‑through‑regular‑repeating‑weekly‑game‑meet‑up‑event‑schedules‑all‑year‑round‑calendar‑time‑periods.