how many number of weight do you need to weight 31 kg of Rice if you have one kg of weight stone?

• 5 weighings required.
  1 kg= 1kg stone
  2 kg=(1+1)
  4kg=1+2+1
  8kg=1+2+4+1
  16kg=1+2+4+8+1
  31kg=1+2+4+8+16
  Total 5 operations
• 8 years agoHelpfull: Yes(3) No(0)
• Zero, bcz if you know it is 31 kg then what is the need of weighing it?
• 7 years agoHelpfull: Yes(2) No(0)
• One because we can weigh it by 1kg at a time.
• 8 years agoHelpfull: Yes(1) No(0)
• 5 times,
  first 1kg weight=1kg rice
  then put the 1kg rice with the weight,and that makes a 2 kg weight. measure the next 2kg of rice using this weight and put the measured 2 kg of rice with the weight, that makes a 4 kg weight.repeat this process until the weight is 16 kg. measure another 16 kg of rice that means a total of 32 kg. out of which 1 kg is the weight stone. so you will end up with 32-1=31 kg of rice.
• 8 years agoHelpfull: Yes(1) No(0)
• there are total 5 ways.
  we have only one kg of weight so,
  2kg=1kg+1kg
  4=1+2+1
  8=1+2+4+1
  16=1+2+4+8+1
  31=1+2+4+8+16
• 7 years agoHelpfull: Yes(1) No(0)
• If you weight the 1kg rice one by one then we used this one kg of weight stone.
  And if you weight 31kg rice at a time then we required 30 kg of weight stone and (one kg of weight stone this is given to the questions).
• 8 years agoHelpfull: Yes(0) No(0)
• 5
  1+2+4+8+16
• 8 years agoHelpfull: Yes(0) No(0)
• 1
  with one stone kg rice will be weighted after using one kg rice and one kg stone two kg rice can be weighted so on......
• 7 years agoHelpfull: Yes(0) No(1)
• 5
  by repetition
• 7 years agoHelpfull: Yes(0) No(0)