Question
Download Solution PDFপ্রদত্ত দুটি চিহ্ন এবং সংখ্যা পরস্পর পরিবর্তন করলে নিচের কোন সমীকরণটি সঠিক হবে না?
× এবং +, 7 এবং 4
I. 7 × 8 + 4 – 6 ÷ 3 = 57
II. 4 × 8 – 9 ÷ 3 + 7 = 3
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFএখানে অনুসরণ করা ধাঁচটি হল:
প্রদত্ত: × এবং +, 7 এবং 4
I. 7 × 8 + 4 – 6 ÷ 3 = 57
প্রদত্ত: × এবং +, 7 এবং 4
⇒ 4 + 8 × 7 – 6 ÷ 3 = 57
⇒ 4 + 8 × 7 - 2 = 57
⇒ 4 + 56 - 2 = 57
⇒ 60 - 2 = 57
⇒ 58 ≠ 57 (সঠিক নয়)
II. 4 × 8 – 9 ÷ 3 + 7 = 3
প্রদত্ত: × এবং +, 7 এবং 4
⇒ 7 + 8 – 9 ÷ 3 × 4 = 3
⇒ 7 + 8 - 3 × 4 = 3
⇒ 7 + 8 - 12 = 3
⇒ 15 - 12 = 3
⇒ 3 = 3 (সঠিক)
সুতরাং, শুধুমাত্র I সঠিক নয়।
সুতরাং, সঠিক উত্তর হল "বিকল্প 2"
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