Question
Download Solution PDFIf '+' means '-', '-' means '×', '×' means '÷' and '÷' means '+', then which of the following equations will be correct?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven :
| Signs | + | - | × | ÷ |
| Means | - | × | ÷ | + |
So, after interchanging the signs :
- Option - (1) :
96 ÷ 3 + 56 × 16 - 5 = 45 ⇒ 96 + 3 - 56 ÷ 16 × 5 = 45
96 + 3 - 3.5 × 5 = 45
96 + 3 - 17.5 = 45
99 - 17.5 = 45
82.5 ≠ 45 (LHS ≠ RHS)
- Option - (2) :
20 + 44 ÷ 11 × 3 - 9 = 30 ⇒ 20 - 44 + 11 ÷ 3 × 9 = 30
20 - 44 + 3.67 × 9 = 30
20 + 33.03 - 44 = 30
53.03 - 44 = 30
9.03 ≠ 30 (LHS ≠ RHS)
- Option - (3) :
108 + 3 - 36 × 6 ÷ 15 = 105 ⇒ 108 - 3 × 36 ÷ 6 + 15 = 105
108 - 3 × 6 + 15 = 105
108 + 15 - 18 = 105
123 - 18 = 105
105 = 105 (LHS = RHS)
- Option - (4) :
15 - 6 × 15 + 80 ÷ 2 = 25 ⇒ 15 × 6 ÷ 15 - 80 + 2 = 25
15 × 0.4 - 80 + 2 = 25
6 + 2 - 80 = 25
8 - 80 = 25
-72 ≠ 25 (LHS ≠ RHS)
Last updated on Jul 8, 2025
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