Question
Download Solution PDFBy interchanging the given two signs and numbers which of the following equation will be not correct?
- and ÷, 8 and 2
I. 5 + 7 - 8 × 4 ÷ 2 = 9
II. 3 + 8 × 4 - 2 ÷ 1 = 3
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFWe interchange the signs & numbers in the given equations and solve them by using BODMAS rule:
By interchanging: - and ÷, 8 and 2
I. 5 + 7 - 8 × 4 ÷ 2 = 9
⇒ 5 + 7 ÷ 2 × 4 - 8 = 9
⇒ 5 + 3.5 × 4 - 8 = 9
⇒ 5 + 14 - 8 = 9
⇒ 19 - 8 = 9
⇒ 11 ≠ 9
II. 3 + 8 × 4 - 2 ÷ 1 = 3
⇒ 3 + 2 × 4 ÷ 8 - 1 = 3
⇒ 3 + 2 × 0.5 - 1 = 3
⇒ 3 + 1 - 1 = 3
⇒ 4 - 1 = 3
⇒ 3 = 3
So, only equation I is not correct.
Hence, the correct answer is "Option 4".
Last updated on Jun 13, 2025
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