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

    Question

    Which of the following options gives the value of

    1999² – 999²?
    A 3000000 Correct Answer Incorrect Answer
    B 2988000 Correct Answer Incorrect Answer
    C 2998000 Correct Answer Incorrect Answer
    D 1000000 Correct Answer Incorrect Answer

    Solution

    1999² – 999² (1999-999) (1999+999) =1000(2998) =2998000.

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