Question
Download Solution PDFWhich two signs should be interchanged to make the below equation mathematically correct?
132 ÷ 6 - 24 × 5 + 9 = 43
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFLet's check each option,
1) ÷ and ×
→ 132 × 6 - 24 ÷ 5 + 9 = 43
→ 132 × 6 - 4.8 + 9 = 43
→ 792 - 4.8 + 9 = 43
→ 801 - 4.8 = 43
→ 762.8 ≠ 43
→ LHS ≠ RHS
2) + and ÷
→ 132 + 6 - 24 × 5 ÷ 9 = 43
→ 132 + 6 - 24 × 5/9 = 43
→ 132 + 6 - 13.3 = 43
→ 138 - 13.3 = 43
→ 124.7 ≠ 43
→ LHS ≠ RHS
3) - and +
→ 132 ÷ 6 + 24 × 5 - 9 = 43
→ 22 + 24 × 5 - 9 = 43
→ 22 + 120 - 9 = 43
→ 142 - 9 = 43
→ 133 ≠ 43
→ LHS ≠ RHS
4) + and ×
→ 132 ÷ 6 - 24 + 5 × 9 = 43
→ 22 - 24 + 5 × 9 = 43
→ 22 - 24 + 45 = 43
→ 67 - 24 = 43
→ 43 = 43
→ LHS = RHS
Here, we can see that only Option 4 satisfies the equation.
Hence, the correct answer is "+ and ×".
Last updated on Jul 8, 2025
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