Preference

প্রশ্নঃ A : B = 4 : 5, A : C = 10 : 9, then A : B : C =?

  1. ক.
    4 : 5 : 9
  2. খ.
    4 : 5 : 10
  3. গ.
    8 : 9 : 10
  4. ঘ.
    20 : 25 : 18
  5. ঙ.
    None of these
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