প্রদত্ত 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

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SSC CGL 2022 Tier-I Official Paper (Held On : 12 Dec 2022 Shift 3)
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  1. শুধুমাত্র II
  2. শুধুমাত্র I
  3. I বা II কোনটিই নয়
  4. I এবং II উভয়ই 

Answer (Detailed Solution Below)

Option 2 : শুধুমাত্র I
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এখানে 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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