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If ‘P’ stands for ‘+’, ‘Q’ stands for ‘−’, ‘R’ stands for ‘×’ and ‘S’ stands for ‘÷’, then what will come in place of the question mark (?) in the following equation? 24 S 4 R 3 P 8 Q 2 = ?
24
18
22
20
24
Apply BODMAS rule strictly: Division, Multiplication, Addition, and then Subtraction to avoid order-of-operation errors.
Apply BODMAS rule strictly: Division, Multiplication, Addition, and then Subtraction to avoid order-of-operation errors.
Mapping Signs
Replace the letters with their designated mathematical symbols: 24 S 4 R 3 P 8 Q 2 becomes 24 / 4 * 3 + 8 - 2.
Applying BODMAS
First, perform division: 24 / 4 = 6. Second, perform multiplication: 6 * 3 = 18. Third, perform addition: 18 + 8 = 26. Finally, perform subtraction: 26 - 2 = 24.
B: 18 results from incorrect order of operations; C: 22 results from ignoring multiplication precedence; D: 20 results from miscalculating the final subtraction step.
A is correct because following the BODMAS rule leads to exactly 24 (6 * 3 + 8 - 2 = 18 + 8 - 2 = 26 - 2 = 24).
Always write out the expression after substitution before solving; skipping this step leads to common errors in grouping or priority of operators.
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