New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The sum and product of two numbers are 18 and 72,

    respectively. If 'b' represents the sum of their reciprocals, then which of the following is true.
    A b is more than 0.50 Correct Answer Incorrect Answer
    B b is less than 0.25 Correct Answer Incorrect Answer
    C b is less than 0.5 Correct Answer Incorrect Answer
    D b is more than 0.5 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the numbers be x and y. Given, x + y = 18 and xy=72. According to the question, b = [(1/x)+(1/y)] = {(x+y)/xy} So, b = 18/72 = 0.25, which is less than 0.5.

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