Find Lighter Gold Coin

• Angelina has 25 gold coins. One on those coins is lighter, while the rest of the coins have the same weight. If Angelina has a balance, how would Angelina determine which coin is the lighter one with 3 weightings?
  
  
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• Right Answer of the last Asked Question is here...........
  
  Andy, Mark, Grant, and David were finalists of Golf Trophy. Eighteen holes were played. All of them scored 12 pars. Andy scored 3 birdies. Mark scored 2 eagles. Grant did not have any birdie. David did not have any eagle. One player bogeyed twice. Two players bogeyed thrice. One player bogeyed 4 times. One player birdied once. One player birdied twice. One player eagles once. One player eagles thrice.
  
  
  

  Here is how each players scored:
  
  

  Players --------- Eagles ---------- Birdies --------- Bogeys
  
  

  Andy ---------------1------------------3-----------------2
  
  

  Mark---------------2------------------1-----------------3
  
  

  Grant--------------0------------------2-----------------4