De la o tipografie a plecat catre 3 librarii un transport cu 125 de pachete a cate 115 enciclopedi cate enciclopedii a primit fiecare librarie stiind ca la primele doua librari au fost livrate 9375 de enciclopedii iar la ultimele doua 9775 enciclopedii

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244