📘 Quiz

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Question 1 / 2
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1
A box contains 5 silver, 7 gold, and 3 bronze coins. What is the probability that a randomly picked coin is neither silver nor bronze?
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Solution: Step 1: Calculate the total number of coins: 5 (silver) + 7 (gold) + 3 (bronze) = 15 Step 2: Determine the number of favorable outcomes (gold coins): 7 Step 3: Calculate the probability: P(E) = Number of favorable outcomes / Total number of coins = 7 / 15 Step 4: Therefore, the required probability is 7/15.
2
What is the probability of answering all three questions correctly by guessing in a quiz?
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Solution: Step 1: Probability of answering the multiple-choice question correctly = 1/3. Step 2: Probability of answering both true/false questions correctly = 1/2 * 1/2 = 1/4. Step 3: Probability of answering all questions correctly = (1/3) * (1/4) = 1/12.
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