Disc Math. (Impossible to answer?)

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In summary, the conversation discusses a question in a document about picking socks and being sure to have at least two black socks. The solution suggests turning on a light after picking a certain number of socks, but the person in the conversation argues that it is impossible to be sure of the color of the first twelve socks and therefore the 13th and 14th pickings could also be uncertain. The other person simplifies the solution by stating that picking 14 socks will guarantee two black socks.
  • #1
Miike012
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Is the question in the paint document flawed?

The question says.
How many socks must he take out to be sure that he has at least two black socks?

The solution to this problem is..

in case if all twelve pickings are brown...

Well how can he be sure that all twelve pickings are brown? He cannot. All twelve of his first pickings may be brown but they may also be black. Therefore he cannot be sure that the 13th and 14th pickings are black or brown because it is impossible for the person to know if his first twelve pickings are black or brown.
 

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  • #2
Miike012 said:
Is the question in the paint document flawed?

The question says.
How many socks must he take out to be sure that he has at least two black socks?

The solution to this problem is..

in case if all twelve pickings are brown...

Well how can he be sure that all twelve pickings are brown? He cannot. All twelve of his first pickings may be brown but they may also be black. Therefore he cannot be sure that the 13th and 14th pickings are black or brown because it is impossible for the person to know if his first twelve pickings are black or brown.

You are really overthinking a simple question. He turns the lights on after he's picked a certain number of socks. If he only picks 2 socks, he might or might not have 2 black ones. If he picks 13 socks he might or might not have 2 black ones. If he picks 14 he definitely will have 2 black socks. That's all.
 
  • #3
Dick said:
You are really overthinking a simple question. He turns the lights on after he's picked a certain number of socks. If he only picks 2 socks, he might or might not have 2 black ones. If he picks 13 socks he might or might not have 2 black ones. If he picks 14 he definitely will have 2 black socks. That's all.

I'm not overthinking the problem, that is how I interpreted the problem.

Re-edit. Nevermind I was reading it wrong.
 
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FAQ: Disc Math. (Impossible to answer?)

What is Disc Math?

Disc Math is a term used to describe any mathematical problem or concept that involves discs or circles. It can also refer to the use of discs as a visual aid in problem solving or teaching math concepts.

Is Disc Math a real branch of mathematics?

No, Disc Math is not a recognized branch of mathematics. It is more of a descriptive term for problems or concepts that involve discs or circles.

Can you give an example of a Disc Math problem?

One example of a Disc Math problem is finding the area of a circular disc with a given radius. This can be solved using the formula A = πr^2, where A is the area and r is the radius.

How is Disc Math used in real life?

Disc Math can be used in various real-life applications, such as calculating the volume of cylindrical objects, designing circular objects or structures, and understanding concepts like rotation in physics and engineering.

Is Disc Math a difficult concept to understand?

It depends on the specific problem or concept being studied. Some Disc Math problems may be more challenging than others, but with practice and understanding of basic mathematical principles, it can be easily grasped.

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