Multiple Choice Questions on What is the number of selections of 10 consecutive things out of 12 things in a circle taken in the ........... for Civil Services Exam (CSAT) Preparation

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    What is the number of selections of 10 consecutive things out of 12 things in a circle taken in the clockwise direction ?

    This questions was previously asked in
    Complete-Test, Previous year (2023)

    3

    Incorrect Answer

    11

    Incorrect Answer

    12

    Correct Answer

    66

    Incorrect Answer
    Explanation:

    - In a circular arrangement, 12 things are placed in a circle.

    - If selecting 10 consecutive things, fix one starting point and count the next 9 in a clockwise direction.

    - Since it's circular, any sequential 10 items determine their counterparts.

    - The number of ways to pick 10 consecutive items equals the number of items: 12.

    - Each distinct circular arrangement has a respective selection of 10 items.

    - Opt:1 (3): Incorrect; doesn’t match problem conditions.

    - Opt:2 (11): Incorrect; applies to linear logic.

    - Opt:3 (12): Correct; matches count of distinct selections.

    - Opt:4 (66): Incorrect; applies to combinations, not circular.


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