Mathematics for IGCSE & O level - Probability (Section 4 - No. 7)
A jar contains 4 red, 5 blue and 3 green marbles. What is the probability of drawing a marble that is not red?
1/3
5/12
2/3
7/12
Explanation
7 marbles are not red out of the 12 total, 7/12 is the probability
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