What will come in the place of the question mark (?) in the following equation if ‘+’ and ‘−' are interchanged and ‘÷’ and ‘×’ are interchanged?
51 − 8 ÷ 2 + 6 × 2 = ?
Correct Answer:
C. 64
Explanation:
The correct answer is Option C: 64.
To solve the equation, first swap the mathematical symbols as instructed: '+' becomes '−', '−' becomes '+', '÷' becomes '×', and '×' becomes '÷'. The original expression 51 − 8 ÷ 2 + 6 × 2 transforms into 51 + 8 × 2 − 6 ÷ 2. Following the BODMAS/PEMDAS rule, perform multiplication and division first: 8 × 2 = 16 and 6 ÷ 2 = 3. The equation now reads 51 + 16 − 3. Finally, carry out the addition and subtraction: 51 + 16 = 67, and 67 − 3 results in 64.
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