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    Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.64 * 4 * 9 * 7 * 2 = 21
    Question

    Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
    64 * 4 * 9 * 7 * 2 = 21

    A.

    ÷ - + ×

    B.

    × - + ÷ 

    C.

    - × + ÷

    D.

    + × - ÷

    Correct option is A

    Concept: interchange mathematical operators and solve as per BODMAS rule.
    Explanation:
    Check option A, ​÷ - + ×
    Given:
    64 * 4 * 9 * 7 * 2 = 21
    After interchanging,
    64 ÷ 4 - 9 + 7 × 2 = 21
    or, 16-9+14=21
    or, 21=21
    so, its correct.

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