There are 35 red marbles, 8 blue marbles, and 7 green marbles in a bag. what is the theoretical probability of randomly drawing a red marble and then a green marble? 42% 10% 9.8% 84%

Total marbles = 35 red+8 blue+7green = 50 marbles 

1) probability of drawing blue or green marble = 8/50+7/50 = 15/50 
= 15/50x100 = 30% 

2) probability of drawing red marble and then green marble 
= 35/50+7/49 
= 7/10+7/49 
= (7.49+7.10)/10.49 
= (343+70)/490 
= 413/490 = 0.8425 
= 0.8425x100 = 84.25 = 84% 

3)probability randomly drawin a red marble 
= 35/50 
=(35/50)x100 = 70%