Question
Download Solution PDFIf ‘-‘ means ‘division’, ‘+’ means ‘multiplication’, ‘×’ means ‘addition’ and ‘÷’ means ‘subtraction’, which of the following equations is correct?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF|
Symbols |
- |
+ |
× |
÷ |
|
Meaning |
÷ |
× |
+ |
- |
1. 10 - 2 + 3 ÷ 9 × 2 = 8
⇒ 10 ÷ 2 × 3 - 9 + 2 = 8
⇒ 5 × 3 - 9 + 2 = 8
⇒ 15 - 9 + 2 = 8
⇒ 17 - 9 = 8
⇒ 8 = 8
2. 10 + 3 - 2 × 9 ÷ 2 = 21
⇒ 10 × 3 ÷ 2 + 9 - 2 = 21
⇒ 10 × 1.5 + 9 - 2 = 21
⇒ 15 + 9 - 2 = 21
⇒ 24 - 2 = 21
⇒ 22 ≠ 21
3. 20 + 6 - 4 × 9 ÷ 6 = 32
⇒ 20 × 6 ÷ 4 + 9 - 6 = 32
⇒ 20 × 1.5 + 9 - 6 = 32
⇒ 30 + 9 - 6 = 32
⇒ 39 - 6 = 32
⇒ 33 ≠ 32
4. 20 ÷ 9 × 9 - 4 + 6 = 33
⇒ 20 - 9 + 9 ÷ 4 × 6 = 33
⇒ 20 - 9 + 2.25 × 6 = 33
⇒ 20 - 9 + 13.5 = 33
⇒ 33.5 - 9 = 33
⇒ 24.5 ≠ 33
Hence, ‘10 - 2 + 3 ÷ 9 × 2 = 8’ is the correct answer.
Last updated on Jul 8, 2025
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