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A bag has 10 red marbles and 15 blue marbles. The probability of drawing a red marble at random is:
A2/5
B3/5
C10/25 (= 2/5)
D1/2
Answer & Solution
Correct answer: A. 2/5
P(red) = (favourable)/(total) = 10/25 = 2/5 = 0.4. Options A and C are the same fraction (2/5), with C showing the unsimplified form.
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