You have coins of all dimensions. You need to provide exact change at the counter.you have 155 paisa. In how many ways you can divide this so that you can provide exact change and you will carry as less coins as possible

• 1,2,4,8,16,32,64,28 paisa coins ..... 8 coins
• 12 years agoHelpfull: Yes(5) No(1)
• 8 coins
  I think Dipin is right.
  @ Arvind,
  pls note that
  you have 155 paisa onbly and not 255 paisa..
• 12 years agoHelpfull: Yes(2) No(0)
• answer is 8...
  1,2,4,8,16,32,64,128 coin
  we can provide exact change for example if anyone want43 paisa than
  43=32+8+2+1
  another example
  105=64+32+8+1
• 12 years agoHelpfull: Yes(0) No(2)
• DIPIN'S solution explanation:
  like digital series
  1,2,4,8,16,32,64 sum up to 1 to 64 is 127 so add 28 in 127 to get 155....
  so coins are
  1,2,4,8,16,32,64,28 paisa coins ..... 8 coins
  
• 11 years agoHelpfull: Yes(0) No(0)