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    Which two signs and which two numbers (not digits) should be interchanged to yield the value ‘zero’ for the following expression? 2 – 55 + 11 × 4 ÷ 18
    Question

    Which two signs and which two numbers (not digits) should be interchanged to yield the value ‘zero’ for the following expression?
    2 – 55 + 11 × 4 ÷ 18

    A.

    + and ÷; 11 and 18

    B.

    + and ÷; 2 and 18

    C.

    – and ÷; 2 and 4

    D.

    × and – ; 4 and 11

    Correct option is B

    Given:  2 – 55 + 11 × 4 ÷ 18
    Operation preference wiseSymbolBrackets[],,()Orders, of(power),(root),ofDivision÷Multiplication×Addition+Subtraction\begin{array}{|c|c|} \hline\textbf{Operation preference wise} & \textbf{Symbol} \\\hline\text{Brackets} &[],{}, () \\ \hline \text{Orders, of} & (power), √ (root) , of \\ \hline \text{Division}& ÷ \\ \hline \text{Multiplication} & × \\ \hline \text{Addition} & + \\ \hline \text{Subtraction} & - \\\hline \end{array} ​​
    A) + and ÷; 11 and 18
    = 2 – 55 ÷ 18 × 4 + 11
    (Not integer) 
    B) + and ÷; 2 and 18
    = 18  – 55 ÷ 11 × 4 + 2
    = 18  – 5 × 4 + 2
    = 18  – 20 + 2
    = 20 – 20 
    = 0 

    Thus, correct option is (b).



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