Question

Cineva????????????????????​

Answer 1

A={100;101;102;103;.....;999}

de la 100 la 999 sunt 999-100+1=900 de numere

card A=900

Probabilitatea =numarul cazurilor favorabile /numarul cazurilor posibile

Cazuri favorabile:9; (100; 200; 300;....;900)

Cazuri posibile: 900; (multimea A are 900 de numere)

Probabilitatea=9/900=1/100