An apple seller is having some apples. He is selling half of the apple what he has plus half the apple to the first customer. In the same way he sells the remaining apple to 7 customers. After selling to 7 customers, he has no apples with him

• The answer is: 127 apples
  
  No. of apples sold,
  to first customer = (127/2) + (1/2) = 64 So,apples left = 63
  to second customer = (63/2) + (1/2) = 64 So,apples left = 31
  to third customer = (31/2) + (1/2) = 64 So,apples left = 15
  to fourth customer = (15/2) + (1/2) = 64 So,apples left = 7
  to fifth customer = (7/2) + (1/2) = 64 So,apples left = 3
  to sixth customer = (3/2) + (1/2) = 64 So,apples left = 1
  to seventh customer = (1/2) + (1/2) = 64 So,apples left = 0
  
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