Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2008-01-28 01:58:34

umbros
Member
Registered: 2008-01-27
Posts: 8

The Problem about Bacteria

Hello, everyone!

THE PROBLEM:
There are bacteria in a glass. In one second each of bacteria is gone divided in two, after that each of appeared bacteria in one second gone divided in two etc. In one minute glass is full.

In what time glass was half-filled?
____________________
My Blog: Terrific Math!

Last edited by umbros (2008-01-30 21:24:56)

Offline

#2 2008-01-28 07:15:05

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

Re: The Problem about Bacteria


igloo myrtilles fourmis

Offline

#3 2008-01-28 20:20:34

umbros
Member
Registered: 2008-01-27
Posts: 8

Re: The Problem about Bacteria

Yes, your answer is right.

John E. Franklin wrote:

____________________
My Blog: Terrific Math!

Last edited by umbros (2008-01-30 21:26:04)

Offline

#4 2008-01-30 07:49:45

Zach
Member
Registered: 2005-03-23
Posts: 2,075

Re: The Problem about Bacteria

The glass is never half-full, it is only half-empty at 59 seconds.


Boy let me tell you what:
I bet you didn't know it, but I'm a fiddle player too.
And if you'd care to take a dare, I'll make a bet with you.

Offline

#5 2008-01-30 18:49:16

Devantè
Real Member
Registered: 2006-07-14
Posts: 6,400

Re: The Problem about Bacteria

Hehe, that's clever. I had to check the answer I got before I realised that I was right. smile

I like these kinds of problems.

Offline

#6 2008-01-30 21:38:57

NullRoot
Member
Registered: 2007-11-19
Posts: 162

Re: The Problem about Bacteria

I was never happy with the supposedly philosophical question "Is the glass half empty or half full?".

It depends on the context really. If the process of filling the glass gets it to that point, then it's half full. If you empty the water from the glass to get to that point, then it's half empty. If the glass just suddenly existed with half it's potential volume of water in it, then I think the better question is "Where did it come from and why is it here?" what


Trillian: Five to one against and falling. Four to one against and falling… Three to one, two, one. Probability factor of one to one. We have normality. I repeat, we have normality. Anything you still can’t cope with is therefore your own problem.

Offline

Board footer

Powered by FluxBB