logo

Farm Fair Contest

 

What is the minimum number of weighing operations required to measure 63 kg of wheat, if only one weight of 1 kg is available?

Submit Your Answers   See Previous Batch   See Next Batch   
Anonymous from Somewhere
School: Some School
  Report Abusive
Your answer: 4
Explanation: there are four operations

john rey from Philippines
School: GFIS
  Report Abusive
Your answer: 63
Explanation: because the 63 kg of wheat if only one weight of 1 kg 
About Me:     my about me is help the family

Anonymous from Somewhere
School: Some School
  Report Abusive
Your answer: 163
Explanation:
About Me:     All about me is that I love  math and I can't wa

Teju from India
School: Maharishi Vidya Mandir
  Report Abusive
Your answer: 62
Explanation: because 63-1=62
About Me:     real name Tejas   .. this is enough !!!!!!!!!!!!!!!!!!!!!!!

Lebone from Canada
School: Downie Central
  Report Abusive
Your answer: 3
Explanation:
About Me:     I like Turtles

Shaka Prynne from United States
School: Richmond Elementary
  Report Abusive
Your answer: If I want to minimize trips to teh scale, I'd say 7.
Explanation: OK, the scale only weighs 1Kg at a time, but wheat has a uniform density, so I ask my workers to make nine fairly equal piles of wheat. Then I take one pile of wheat and weigh it in 1kg increments. Nine is a good number because it is the largest number you can remember without writing it down. Each pile should weigh whatever it weighs (actually 7kg), and with a weight of 1kg, it's seven trips to the scale. Of course you have the work of shoveling all those piles.

Submit Your Answers   See Previous Batch   See Next Batch   
Privacy Policy & Terms of Use    About Us   Contact Us   Advertise   Feedback   FAQ