A bag has 4 red, 6 blue and 1 green balls. One ball is drawn at random. What is the probability that it is red?
Answer and explanation
Correct answer: C. 4/11
- Step 1: There are 11 balls in total and 4 are red, so the probability is . Answer: 4/11. Why not the others: 6/11: uses the wrong colour. 0.4: ignores the green ones. 2.75: inverts the fraction.
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