Multiple Choice Questions on Let x be the number of integers lying between 2999 and 8001 which have at least two digits equal The........... for NDA Exam Preparation

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Multiple Choice Questions

Let x be the number of integers lying between 2999 and 8001 which have at least two digits equal The...........

Mathematics (NDA) Permutation & Combination
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    Let x be the number of integers lying between 2999 and 8001 which have at least two digits equal. Then x is equal to

    2480

    Incorrect Answer

    2481

    Correct Answer

    2482

    Incorrect Answer

    2483

    Incorrect Answer
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    Explanation:

    The no. with all distinct digits=5×9×8×7=2520
    ∴x=5001–2520=2481

    By: Munesh Kumari
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