1. Banned Newbie
Join Date
Feb 2008
Location
The Matrix
Posts
10
(365*8000)/3.14)/(6.67*10^-14)/100000

2. Senior Member Always Around
Join Date
Dec 2005
Posts
1,180
22

[[[[[[[[[[[[[[

3. Senior Member Always Around
Join Date
Jul 2007
Location
somewhere but not here
Posts
1,968
Is it 728??

4. Senior Member Community Builder
Join Date
Oct 2005
Location
FL
Posts
2,785
Originally Posted by jamie1990
22

[[[[[[[[[[[[[[

You are very right, jamie!
if you go to 23, it will give you fractions~

5. There are no problems going on ? Anyone ? (not that I have time nowadays though )

6. Senior Member Community Builder
Join Date
Jun 2006
Posts
9,170
^Seconded. The problems here are slowly refreshing me from my math rustiness, even if I am not among the people to get the answer first

7. Senior Member Community Builder
Join Date
Oct 2005
Location
FL
Posts
2,785
Well it was supposed to be jamie turn..

8. Senior Member Always Around
Join Date
Jul 2007
Location
somewhere but not here
Posts
1,968

## new problem

well since nobody has posted a new problem in a while i'll go ahead with a new one:

Consider a large jar of custer sugar, an unmarked balance and a 1 gram weight. What is the minimum number of weighing operations by which 1 kg of sugar is measured, and how is that procedure.

9. umm... if I remember my physics correctly, it can be done in one go. You just need to place the 1 gram weight 1000 times the distance away from the fulcrum as the distance between the fulcrum and the sugar.

so... 1Kg|sugar-fulcrum-{1000x}-1g|weight

or... close enough, you get my meaning.

10. Senior Member Community Builder
Join Date
Aug 2006
Posts
5,630
^ I'm pretty sure that it's supposed to "equal" = "balanced".

In which case it is:

1
2
4
8
16
32
64
128
256
512
1024

minus 16 and 8

So 15 measurements in total

At each step the scale is balanced and the amounts are pooled together, with the exception of 8 and 16, which are measured twice with one set put aside, this is then used in 2 more measurements to subtract 8 and 16 from 1024. So, 11 measurements to get to 1024, along with 2 extra measurements of 16 and 8, then another 2 measurements of 16 and 8 at the end (this time taken from the pool of sugar instead of the jar).
Last edited by adonai; 03-12-2008 at 03:37 PM.

Page 5 of 7 First ... 34567 Last

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•
vBulletin Skin by: ForumThemes.com