Question
Download Solution PDFপ্রদত্ত সমীকরণটি সঠিক করতে কোন দুটি চিহ্নের বিনিময় করা উচিত?
81 + 3 ÷ 9 * 5 − 12 = 60
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
81 + 3 ÷ 9 * 5 − 12 = 60
গণনা:
বিকল্পের পদ্ধতিতে:
বিকল্প 1: বিনিময় ÷ এবং +
⇒ 81 ÷ 3 + 9 * 5 − 12 = 60
⇒ 27 + 45 -12 = 60
⇒ 60 = 60
এই সমীকরণটি সঠিক।
বিকল্প 2: বিনিময় + এবং *
⇒ 81 * 3 ÷ 9 + 5 − 12 = 60
⇒ 27 +5 - 12 = 60
⇒ 20 ≠ 60
এই সমীকরণটি সঠিক নয়।
বিকল্প 3: বিনিময় ÷ এবং –
⇒ 81 + 3 - 9 * 5 ÷ 12 = 60
⇒ 81 + 3 - 3.75 = 60
⇒ 80.25 ≠ 60
এই সমীকরণটি সঠিক নয়।
বিকল্প 4: বিনিময় + এবং –
⇒ 81 - 3 ÷ 9 * 5 + 12 = 60
⇒ 81 - 1.66 + 12 = 60
⇒ 91.34 ≠ 60
এই সমীকরণটি সঠিক নয়।
∴ (÷ এবং +) এর বিনিময় প্রদত্ত সমীকরণটিকে সঠিক করবে।
Last updated on Jul 19, 2025
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