The answer to your question is C
Im not sure but is the answer one?
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(B.)
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6 + 5 + 4 + 3 = 18
= probability of getting a green marble
= probability of getting a yellow marble
= probability of getting a red marble
= probability of getting a purple marble
Hope it helped,
BioTeacher101
7.2 because anything to the 0 power is 1.