If '+' denotes 'multiplication', '-', denotes 'addition', '×', denotes 'division' and '÷' denotes 'subtraction', then which of the following equation is true?
If '+' denotes 'multiplication', '-', denotes 'addition', '×', denotes 'division' and '÷' denotes 'subtraction', then which of the following equation is true? Correct Answer 10 - 12 ÷ 18 × 6 + 2 = 16
|
Symbol |
+ |
- |
× |
÷ |
|
Meaning |
× |
+ |
÷ |
- |
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1. 9 + 5 - 16 × 4 ÷ 2 = 41
After replacing the symbols by their meaning, we get:
L.H.S = 9 × 5 + 16 ÷ 4 – 2
= 45 + 4 – 2
= 49 – 2
= 47 ≠ 41
2. 15 + 15 × 3 - 4 ÷ 5 = 26
After replacing the symbols by their meaning, we get:
L.H.S = 15 × 15 ÷ 3 + 4 – 5
= 75 + 4 – 5
= 79 – 5
= 74 ≠ 26
3. 10 - 12 ÷ 18 × 6 + 2 = 16
After replacing the symbols by their meaning, we get:
L.H.S = 10 + 12 - 18 ÷ 6 × 2
= 10 + 12 – 3 × 2
= 10 + 12 – 6
= 22 – 6
⇒ 16 = 16
4. 11 ÷ 8 × 2 - 4 + 1 = 41
After replacing the symbols by their meaning, we get:
L.H.S = 11 - 8 ÷ 2 + 4 × 1
= 11 – 4 + 4
= 11 ≠ 41
Hence, ‘10 - 12 ÷ 18 × 6 + 2 = 16’ is the correct answer.
