Mathematics, 08.01.2020 00:31 mooredollie
Afew probability questions. quickly : ) i have tried to do them but seem to be unable to figure these 2 out.
1). there are 2 red and 5 green balls in the bag. shirley randomly chooses balls one at a time, with replacement. what is the probability of choosing 2 green balls and one red ball?
a 50/343
b 5/21
c 2/21
d 20/147
2). a bag contains 6 red marbles, 4 blue marbles, 7 green marbles, and 3 yellow marbles. a marble is drawn from the bag and not replaced. then a second marble is drawn. what is the probability that both marbles were red?
a 3/40
b 9/100
c 3/38
d 9/95
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