You have only 1 kg weight. You have to weight 31kg. Min number of measurements you have to done

• You can do it in 5 steps.
  1,2,4,8,16
  Asume stone as S (Left Side) weight of 1kg as T (Right Side)
  Move 1T to the same side as S and, Left Side is S+1T, Now weight 2T
  Move 2T to the same side as S and, against S+3T, Now weight 4T
  Move 4T to the same side as S and, against S+7T, weight 8T
  Move 8T to the same side as S and, against S+15T, weight on right Side is 16T
  
  15R + 16R = 31R.
  
• 12 years agoHelpfull: Yes(1) No(0)
• 1 kg ..1kg ........ 2 kg weight is available now..... weighed 1 kg till now.
  2kg .. 2 kg ........4 kg wt is available now........weighed 3 kg till now.
  4 kg .. 4 kg .........8 kg ............................7 kg
  8kg ... 8 kg ......... 16 kg ..........................15 kg weighed till now.
  16 kg .. 16 kg ........ 32 kg available ...............31 kg weighed till now.
  
  so minimum 5 measurements are to be made.
• 12 years agoHelpfull: Yes(0) No(0)