šŸ“¢ Too many exams? Don’t know which one suits you best? Book Your Free Expert šŸ‘‰ call Now!


    Question

    A number 'N' when divided by 14 leaves 11 as remainder.

    If 4N² is divided by 14, then find the remainder.
    A 2 Correct Answer Incorrect Answer
    B 4 Correct Answer Incorrect Answer
    C 6 Correct Answer Incorrect Answer
    D 8 Correct Answer Incorrect Answer

    Solution

    ATQ, N = 14x + 11 So, 4N² = 4 X (14x + 11) ² = 4 X (196x² + 308x + 121) = 784x² + 1232x + 484 We can see that both 784 and 1232 are divisible by 14 So, required remainder will depend on 484 ÷ 14. 484 = 14 X 34 + 8 So, required remainder = 8 Hence, option d.

    Practice Next

    Relevant for Exams:

    ask-question