1 Answers
Option 1 : 4 × 5 + 9 – 3 ÷ 4 = 15
Based on information given,
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1) 4 × 5 + 9 – 3 ÷ 4 = 15
After applying rules,
⇒ 4 + 5 × 9 ÷ 3 – 4 = 4 + 15 – 4 = 15 (True)
2) 4 – 5 × 9 + 3 ÷ 4 = 32
After applying rules,
⇒ 4 ÷ 5 + 9 × 3 – 4 = 0.8 + 27 – 4 = 23.8 ≠ 32 (False)
3) 4 – 5 ÷ 18 × 3 – 4 = 70
After applying rules,
⇒ 4 ÷ 5 – 18 + 3 ÷ 4 = 0.8 – 18 + 0.75 = 1.55 – 18 = – 16.45 ≠ 70 (False)
4) 4 ÷ 5 + 9 – 3 ÷ 4 = 81
After applying rules,
⇒ 4 – 5 × 9 ÷ 3 – 4 = 4 – 15 – 4 = – 15 ≠ 81 (false)
Hence, as per rule given only equation in option 1) hold good.
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