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    Seven houses A,B,C,E,F and H are built in a row (not necessarily in the same order) facing towards north. D is built at the extreme right. A and F are
    Question

    Seven houses A,B,C,E,F and H are built in a row (not necessarily in the same order) facing towards north. D is built at the extreme right. A and F are immediate neighbours of B. E is built immediate next to A. H is forth to the right of B. Three of the combinations listed in the option are alike in a certain way based on the position of the houses in the above arrangement Identify the odd combinations.

    A.

    CA

    B.

    HE

    C.

    BE

    D.

    AF

    Correct option is C

    Given: 
    Seven houses A, B, C, D, E, F and H are built in a row facing towards north.
    Logic:
    1) H is fourth to the right of B. 
    2) A and F are immediate neighbours of B.
    D is built at the extreme right.
    A and F are immediate neighbours of B.
    E is built immediate next to A.
    H is forth to the right of B.
    Thus, the final arrangement:
    Option 1) CA → C is second to the right of A.
    Option 2) HE → H is second to the right of E.
    Option 3) BE → B is second to the left of E.
    Option 4) AF → A is second to the right of F.
    So, BE is odd combination.
    Hence, the correct answer is "BE".

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