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Find the identify element for the binary operation *, defined on the set of Q of rational number, by `a * b =(ab)/(4)`

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Define binary operation.

Let * be a operation defined on the set of non zero rational numbers by a * b = (ab)/4 Find the identity element.

Knowledge Check

  • Number of binary opertions on the set {a,b} are

    A
    10
    B
    16
    C
    20
    D
    8

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