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    Question

    A coin collection includes six Rs. 1 coins, six Rs. 2

    coins, and twelve Rs. 10 coins. One coin goes missing. Find the probability that the lost coin is not a Rs. 10 coin.
    A 1/4 Correct Answer Incorrect Answer
    B 1/2 Correct Answer Incorrect Answer
    C 2/3 Correct Answer Incorrect Answer
    D 3/5 Correct Answer Incorrect Answer

    Solution

    Number of Rs. 10 coins = 12
    Total number of coins = 6 + 6 + 12 = 24
    So, the required probability = 1 - 12/24 = 12/24 = 1/2

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