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  1. K

    How should a pencil be held above a table and directly below a tube light to...

    ...obtain a sharp shadow? (question of geometrical optics)
  2. K

    how to get the license to open an hookah lounge?

    plz let me kno the process to buy license for hukkah kaunge
  3. K

    how to get the license to open an hookah lounge?

    plz let me kno the process to buy license for hukkah kaunge
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