প্রদত্ত দুটি চিহ্ন পরস্পর পরিবর্তন হলে নিচের কোন সমীকরণটি সঠিক হবে না?  

× এবং -

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SSC CGL 2022 Tier-I Official Paper (Held On : 06 Dec 2022 Shift 1)
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  1. 15 + 5 ÷ 1 - 9 × 4 = 70
  2. 5 - 6 × 3 + 16 ÷ 4 = 31
  3. 11 + 6 × 3 - 8 ÷ 2 = 5
  4. 15 - 4 × 3 + 6 ÷ 1 = 63

Answer (Detailed Solution Below)

Option 1 : 15 + 5 ÷ 1 - 9 × 4 = 70
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Detailed Solution

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BODMAS নিয়ম ব্যবহার করে:

বিকল্পগুলি যাচাই করে:

1. 15 + 5 ÷ 1 - 9 × 4 = 70

× এবং - চিহ্নগুলি বিনিময় করার পর 

⇒15 + 5 ÷ 1 × 9 - 4 = 70

15 + × 9 - 4 = 70

15 + 45 - 4 = 70

⇒60 - 4 = 70

56 ≠ 70

2. 5 - 6 × 3 + 16 ÷ 4 = 31

 × এবং - চিহ্নগুলি বিনিময় করার পর

⇒5 × 6 - 3 + 16 ÷ 4 = 31

× 6 - 3 + 4 = 31

30 - 3 + 4 = 31

⇒27 + 4 = 31

31 = 31

3. 11 + 6 × 3 - 8 ÷ 2 = 5

× এবং - চিহ্নগুলি বিনিময় করার পর

11 + 6 - 3 × 8 ÷ 2 = 5

⇒11 + 6 - × 4 = 5

11 + 6 - 12 = 5

⇒17 - 12 = 5

⇒5 = 5

4. 15 - 4 × 3 + 6 ÷ 1 = 63

× এবং - চিহ্নগুলি বিনিময় করার পর

15 × 4 - 3 + 6 ÷ 1 = 63

15 × 4 - 3 + 6 = 63

60 - 3 + 6 = 63

⇒57 + 6 = 63

⇒63 = 63

শুধুমাত্র বিকল্প 1 অনুসরণ করে না। 

সুতরাং, সঠিক উত্তরটি হল বিকল্প 1

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