# Six Degrees of Seperation

• Feb 9th 2011, 03:56 AM
MathBooBoo
Six Degrees of Seperation
Using Six degrees of Separation
Figure 6.9 billion,
A) How many messages are passed through before all 6.9 billion people are informed?

B) How many were informed during the last round i.e. the round that included the 6.9th bil person.

C) What are the chances a person will receive the info twice before the 6.9th bil person receive it?

D) And the 6.9 Billionth person, not knowing he/she is the last person, continues to pass the message, still under Six degrees of Separation…How many message passes will be needed (minimum possible) before the original 117, 694 millionth person gets to hear it the second time?

For D) Taking that the message passes are at random with NO planned point of contact, i.e. ‘coincidence’ in the real world.

Thank you

• Feb 9th 2011, 04:10 AM
CaptainBlack
Quote:

Originally Posted by MathBooBoo
Using Six degrees of Separation
Figure 6.9 billion,
A) How many messages are passed through before all 6.9 billion people are informed?

B) How many were informed during the last round i.e. the round that included the 6.9th bil person.

C) What are the chances a person will receive the info twice before the 6.9th bil person receive it?

D) And the 6.9 Billionth person, not knowing he/she is the last person, continues to pass the message, still under Six degrees of Separation…How many message passes will be needed (minimum possible) before the original 117, 694 millionth person gets to hear it the second time?

For D) Taking that the message passes are at random with NO planned point of contact, i.e. ‘coincidence’ in the real world.

Thank you

What is the context for this question? For instance, what type of course is it associated with or how did you find it?

CB
• Feb 9th 2011, 04:31 AM
MathBooBoo
Hi CB,

I just thought about it, hence the question.
• Feb 9th 2011, 06:12 AM
CaptainBlack
Quote:

Originally Posted by MathBooBoo
Hi CB,

I just thought about it, hence the question.

Then it is an ill posed question:

A) could probably be addressed by the discerete logistic equation.

The others will take some thought, possibly using stochastic processes.

CB