# nice riddle

By Crazy ยท 6 replies
Nov 27, 2003
1. Assume that you have just heard of a scandal and that you are the first one to know. You pass it on to 4 persons in a matter of 30 minutes. Each of these 4 persons in turn passes it to 4 other persons in the next 30 minutes and so on.

Assume that no one hears it more than once and that the world population is 5.6 billion.

How long will it take for everybody in the world to get to know the scandal?

This is a math one

Greets Crazy,

2. ### somekid007TS RookiePosts: 271

theres always someone born to the world. never will the entire world hear about it

I think it's safe to assume that by "and that the world population is 5.6 billion" he means static, that people that are born don't matter (they wouldn't know about a scandal anyway)

4. ### somekid007TS RookiePosts: 271

oh well, being an IB student means im used to thinking outside the box....

5. ### CrazyTS RookieTopic StarterPosts: 139

LMAO its a riddle dont think so far, just do the math:grinthumb

6. ### somekid007TS RookiePosts: 271

5.6 billion = aprox 4^22.83, 22.83x30min = 685min. pardon me if i am wrong, for i m not too great with math, despite being azn

7. ### CrazyTS RookieTopic StarterPosts: 139

the correct awnser is about 255 minutes:grinthumb

Greets Crazy