Planet fourfi resides in 4 – dimensional space and thus the currency used by its residents are 3 – dimensional objects. The rupees notes are cubical in shape while their coins are spherical. However the coin minting machinery lays out some stipulations on the size of the coins. The diameter of the coins should be at least 256 mm and not exceed 4096 mm.Given a coin, the diameter of the next larger coin is at least 50% greater. The diameter of the coin must always be an integer. You are asked to design a set of coins of different diameters with these requirements and your goal is to design as many coins as possible. How many coins can you design?

• Answer 7
  start with 256....1)
  given next one should be 50 pecent more
  256+128=384........2)
  384+192=576........3)
  576+288=864........4)
  864+432=1296........5)
  1296+648=1944.....6)
  1944+972=2916.....7)
  2916+1458=4374 is greaeter than 4096 so we stopped here
• 12 years agoHelpfull: Yes(6) No(0)
• 1st coin=256
  next coin=1.5*256=384
  and so on continue till the last coin is
• 13 years agoHelpfull: Yes(1) No(2)
• 1st coin=256
  next coin=1.5*256=384
  and so on continue till the last coin is ans=16
• 13 years agoHelpfull: Yes(0) No(2)