Question
Download Solution PDFIn the following question, some symbols are represented by letters as shown below: 'M' means + 'N' means -, 'R' means x, 'P' means ÷, 'Q' means = , Which of the following expressions is correct?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFDecoding signs:
| Letter | M | N | R | P | Q |
| Stands For | + | - | × | ÷ | = |
So, checking each option one by one:
Option 1) 11R4N9M7Q45 ⇒ 11 × 4 - 9 + 7 = 45
⇒ 11 × 4 - 9 + 7 = 45
⇒ 44 + 7 - 9 = 45
⇒ 51 - 9 = 45
⇒ 42 ≠ 45 (LHS ≠ RHS)
Option 2) 8R7N10M13Q70 ⇒ 8 × 7 - 10 + 13 = 70
⇒ 8 × 7 - 10 + 13 = 70
⇒ 56 + 13 - 10 = 70
⇒ 69 - 10 = 70
⇒ 59 ≠ 70 (LHS ≠ RHS)
Option 3) 6R8N39P13Q45 ⇒ 6 × 8 - 39 ÷ 13 = 45
⇒ 6 × 8 - 39 ÷ 13 = 45
⇒ 6 × 8 - 3 = 45
⇒ 48 - 3 = 45
⇒ 45 = 45 (LHS = RHS)
Option 4) 12P4M3R6Q30 ⇒ 12 ÷ 4 + 3 × 6 = 30
⇒ 12 ÷ 4 + 3 × 6 = 30
⇒ 3 + 3 × 6 = 30
⇒ 3 + 18 = 30
⇒ 21 ≠ 30 (LHS ≠ RHS)
Hence, "Option 3" is the correct answer.
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