Question

    The smallest number which when added to 10000 becomes

    divisible by 20, 24 and 30 is
    A 80 Correct Answer Incorrect Answer
    B 200 Correct Answer Incorrect Answer
    C 20 Correct Answer Incorrect Answer
    D 83 Correct Answer Incorrect Answer

    Solution

    ATQ,

    First, find LCM of 20, 24, and 30: Prime factors: 20 = 2² × 5 24 = 2³ × 3 30 = 2 × 3 × 5 ⇒ LCM = 2³ × 3 × 5 = 120 Now divide 10000 by 120: 10000 ÷ 120 = 83 remainder 40 So, we need to add (120 - 40) = 80 to make it divisible

    Practice Next

    Relevant for Exams:

    Hey, Don't leave. If you have any queries regarding any exam let us know here.

    ask-question