A bag contains five yellow marbles, nine red marbles, three blue marbles, six white marbles, and seven black marbles. What is the theoretical probability of pulling a black marble from the bag?

Question

sirm3d · Answer

# of black marbles divided by total # of marbles in the bag

anonymous · Answer

none of the answer match up

sirm3d · Answer

what are the choices?

anonymous · Answer

7/30  3/10  7/23  6/25

sirm3d · Answer

how many marbles are in the bag?

anonymous · Answer

30

sirm3d · Answer

how many black marbles are there?

anonymous · Answer

its also asking for the theoretical probability

sirm3d · Answer

i know that. can't you see (# black marbles) / (total # of marbles) among the choices?

anonymous · Answer

yes

sirm3d · Answer

# black marbles = 7
total # of marbles = 30
just form the fraction

anonymous · Answer

oh i got confused