If 'A' stands for '÷', 'B' stands for '×', 'C' stands for '+' and 'D' stands for '–', what will come in place of the question mark (?) in the following equation? $$27 \text{ A } 9 \text{ D } 35 \text{ C } 11 \text{ B } 6 = ?$$

1. A

   38

2. B

   34

3. C

   28

4. D

   36

Appeared in: DSSSB 14 August 2024

Explanation

• The core task is to replace the letters in the equation with their assigned mathematical operators.
• After substitution, the equation becomes: 27 ÷ 9 – 35 + 11 × 6.
• Following the BODMAS rule, division (27 ÷ 9 = 3) and multiplication (11 × 6 = 66) are performed first.
• The simplified equation is 3 – 35 + 66.
• Performing the final addition and subtraction from left to right (3 - 35 = -32, then -32 + 66) yields the correct answer, 34.

Why Other Options Were Wrong

• Option A: The value 38 is incorrect. This result might be obtained through a calculation error or by not following the BODMAS rule in the correct sequence.
• Option C: The value 28 is incorrect. This result could be obtained by incorrectly processing the signs, for example, by calculating 66 – 3 – 35, which equals 28, instead of the correct sequence 3 – 35 + 66.
• Option D: The value 36 is incorrect. This is a plausible distractor resulting from a minor miscalculation in the final addition or subtraction step, such as calculating 69 – 33 instead of 69 – 35.

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Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain This question tests the ability to solve a mathematical expression by substituting symbols and applying the correct order of operations (BODMAS) as background academic context rather than a clinical decision trigger.
• This is a general aptitude and reasoning question, not directly related to clinical nursing practice.
• However, strong numerical and logical reasoning skills are essential for nurses in tasks like medication dosage calculation, interpreting lab results, and managing patient data, where precision is critical.
• What if? If the question involved calculating a medication dosage, applying the order of operations incorrectly could lead to a serious medication error, highlighting the importance of mathematical accuracy in nursing.

How to Approach the Question

• First, carefully read the question to understand the substitution rule for each letter (A=÷, B=×, C=+, D=–).
• Rewrite the entire mathematical expression, replacing each letter with its corresponding operator: 27 ÷ 9 – 35 + 11 × 6.
• Recall the BODMAS/PEMDAS rule for the order of operations.
• Systematically solve the expression by performing division and multiplication first, from left to right.
• Then, perform the addition and subtraction, also moving from left to right.
• Double-check your calculations to ensure accuracy before selecting the final answer from the options.

Concept Tested & Keywords

• Concept Tested: This question tests the ability to solve a mathematical expression by substituting symbols and applying the correct order of operations (BODMAS).
• Stem keywords: A stands for ÷, B stands for ×, C stands for +, D stands for –, equation
• Lead-in keywords: what will come in place of

Question ID

QjX8wZidbjSJsA2xPBgFYM

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