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  1. Which of the below statements is equivalent to $add += $add ?
    2. A.
    $add = $add
    B.
    $add = $add +$add
    C.
    $add = $add + 1
    D.
    $add = $add + $add + 1

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    Answer : Option B

    Explanation :

    a += b is an addition assignment whose outcome is a = a + b. Same can be done with subtraction,multiplication,division etc.

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