Question
Download Solution PDFযদি 'A' মানে '÷', 'B' মানে '×', 'C' মানে '+', এবং 'D' মানে '-', তাহলে নিম্নলিখিত কোনটির ফলাফল 80 হবে?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত তথ্যের ডিকোডিং:
| চিহ্ন | A | B | C | D |
| অর্থ | ÷ | × | + | - |
এখন প্রতিটি বিকল্প পরীক্ষা করুন:
বিকল্প 1) 18 C 5 A 42 D 6 B 17
18 + 5 ÷ 42 - 6 × 17
→ 18 + 5 ÷ 42 - 6 × 17
→ 18 + 0.199 - 6 × 17
→ 18 + 0.199 - 102
→ -83.881 ≠ 80
বিকল্প 2) 18 A 5 B 42 C 6 D 17
18 ÷ 5 × 42 + 6 - 17
→ 18 ÷ 5 × 42 + 6 - 17
→ 3.6 × 42 + 6 - 17
→ 151.2 + 6 - 17
→ 140.2 ≠ 80
বিকল্প 3) 18 B 5 C 42 A 6 D 17
18 × 5 + 42 ÷ 6 - 17
→18 × 5 + 42 ÷ 6 - 17
→18 × 5 + 7 - 17
→ 90 + 7 -17
→ 80
বিকল্প 4) 18 D 5 A 42 B 6 C 17
18 - 5 ÷ 42 × 6 + 17
→ 18 - 5 ÷ 42 × 6 + 17
→ 18 - 0.119 × 6 + 17
→ 18 - 0.714 + 17
→ 34.286 ≠ 80.
সুতরাং, সঠিক উত্তর হল "বিকল্প 3".
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