lambarka eber (0) tiro kasta oo lagu dhufto wadarta iyo jawaabta soo baxaysaa waa eber (0). Sidaas darteed sharciga iskudhufashada lambarka eber waa jawaab ah eber. Dhinaca kale, lambarka kow (1) tiro kasta oo lagu dhufto wax isbedel ah kuma imanayo, sidaas darteed lambar kow waa ismabedelaha iskudhufasho.