Question
Download Solution PDFBy interchanging the given two signs which of the following equation will be not correct?
+ and –
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFAccording to the question, after interchanging the given two signs + and – :
So,
- Option - (1) : 8 ÷ 4 × 6 + 5 – 9 = 16
8 ÷ 4 × 6 - 5 + 9 = 16
2 × 6 - 5 + 9 = 16
12 + 9 - 5 = 16
21 - 5 = 16
16 = 16 (LHS = RHS)
- Option - (2) : 15 + 3 × 4 – 6 ÷ 2 = 6
15 - 3 × 4 + 6 ÷ 2 = 6
15 - 3 × 4 + 3 = 6
15 + 3 - 12 = 6
18 - 12 = 6
6 = 6 (LHS = RHS)
- Option - (3) : 3 × 2 – 72 ÷ 6 + 8 = 18
3 × 2 + 72 ÷ 6 - 8 = 18
3 × 2 + 12 - 8 = 18
6 + 12 - 8 = 18
18 - 8 = 18
10 ≠ 18 (LHS ≠ RHS)
- Option - (4) : 3 + 4 – 2 × 5 ÷ 1 = 9
3 - 4 + 2 × 5 ÷ 1 = 9
3 - 4 + 2 × 5 = 9
3 + 10 - 4 = 9
13 - 4 = 9
9 = 9 (LHS = RHS)
Therefore, Option 3 is not satisfied the equation.
Hence, "Option - (3)" is the correct answer.
Last updated on Jun 13, 2025
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