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If ‘P’ stands for ‘÷’, ‘Q’ stands for ‘×’, ‘R’ stands for ‘+’ and ‘S’ stands for ‘−‘, what will come in place of the question mark ‘?’ in the following equation? 192 P 4 R 38 S 12 Q 3 =?
48
50
52
54
50
Follow the BODMAS rule (Bracket, Of, Division, Multiplication, Addition, Subtraction) strictly after substituting the symbols.
Follow the BODMAS rule (Bracket, Of, Division, Multiplication, Addition, Subtraction) strictly after substituting the symbols.
Symbol Substitution
Replace the letters with their respective mathematical signs: 192 P 4 R 38 S 12 Q 3 becomes 192 ÷ 4 + 38 - 12 × 3.
Apply BODMASRule
Step 1: Division (192 ÷ 4 = 48). Equation: 48 + 38 - 12 × 3. Step 2: Multiplication (12 × 3 = 36). Equation: 48 + 38 - 36. Step 3: Addition (48 + 38 = 86). Equation: 86 - 36. Step 4: Subtraction (86 - 36 = 50).
A: 48 is incorrect because it ignores the final subtraction step; C: 52 is incorrect due to calculation error in addition; D: 54 is incorrect due to incorrect order of operations.
B is correct because the application of the BODMAS rule to the substituted equation 192 ÷ 4 + 38 - 12 × 3 yields exactly 50.
Always perform Division and Multiplication first as a combined block before handling Addition and Subtraction to avoid common calculation errors.