• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1429
  • Last Modified:

puzzle

this is a puzzle from shakuntla devi.i was unable 2 understand its solution.no clue at all.

a wholesale merchant came 2 me one day and posed his problem.everyday in his business he had to weigh amounts from one pound to one hundred and twenty-one pounds,to the nearest pound.to do this,what is the minimum number of weights he needs and how heavy should each weigh?
0
shilpi84
Asked:
shilpi84
  • 2
2 Solutions
 
ozoCommented:
assuming the merchant is using a balance scale, 5 weights suffice
1, 3, 9, 27, 81
0
 
Harisha M GCommented:
Hi, yes. ozo has correct answer.. I will explain it a bit..

Suppose you want to measure 1 pound...
1               x

Suppose you want to measure 2 pound...
3             1+x

Suppose you want to measure 3 pound...
3                x

Suppose you want to measure 4 pound...
3+1            x

Suppose you want to measure 5 pound...
9            3+1+x

Suppose you want to measure 6 pound...
9               3+x

....


---
Harish
0
 
shilpi84Author Commented:
can u please explain me the solution i m not able 2 understand this
0
 
Harisha M GCommented:
shilpi84, x represents the thing to be measured and the values presented are the weights and/or the thing to be put in each pan of a balance
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Cloud Class® Course: Microsoft Azure 2017

Azure has a changed a lot since it was originally introduce by adding new services and features. Do you know everything you need to about Azure? This course will teach you about the Azure App Service, monitoring and application insights, DevOps, and Team Services.

  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now