Number of Nails in Picture?

  • Thread starter jleo313
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  • #1
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Main Question or Discussion Point

How many nails are in the picture? How did you arrive at this solution?
 

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  • #2
phinds
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How many nails are in the picture?
lots

How did you arrive at this solution?
I guessed
 
  • #3
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Excellent guess. :)
 
  • #4
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amount of nails < infinity
 
  • #5
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Including expected, but not visible nails, between 1 000 and 100 000.
The remaining uncertainty can be reduced by a [insert your favorite useless education here] student, ...
...weighting them (and a few individual nails). You don't want to wait until he counted them, right?
 
  • #6
D H
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How many nails are in the picture?
800-900.
How did you arrive at this solution?
That looks like about 5 pounds of 2" common nails, so 800-900 nails, depending on the manufacturer.
 
  • #7
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answer is zero nails. since op was asking for human nails. end thread/
 
  • #8
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best bet is 1600. Please count it!
 
  • #9
D H
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Don't you just hate these post and run kind of brain teasers?

It's been two weeks since the person who posted the question last came back to the site.
 
  • #10
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I DON'T KNOW. However I will try a stupid approximation technique:

Let N be the number of nails ,
V be the average volume of the nail bulk, and u be the average volume of a single nail (at different orientations). Let l be the length of a single nail. Exclude the empty spaces between the nails!

Identify the average shape of the nail bulk. Find u with respect to l (I.e. u = f(l) ). Find V with respect to l (I.e. V = g(l) ).

Now Nu = V, so N = (V/u) = g(l)/f(l)
 

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