## What I'm Missing

Math help on Numerator, Denominator, Common Denominator, Addition of fractions, Multiplication of fractions, Division of fractions, Percents, Rational numbers, Solving an Equation, Graphic solutions, Representation of solutions with Calculators (Casio, Texas, etc ...), Equalities, Inequalities, how to Factor and Expand expressions, Learn how to add, subtract, multiply and divide numbers (integers) on My Math Forum.

### What I'm Missing

Hey

I've Some missed in pretty basic Mathematics like what's the interval that Includes an Hour is [a,b] or [a,b[ or ]a,b] or What

and Why When we count 10 seconds down it becomes 11 counts how the 10 become 11 that's no sense Have you Got The Idea
or Counting the 10 seconds up it's 10 or 11 how

thanks
Revo
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Posts: 4
Joined: Wed Feb 01, 2012 6:03 am

### Re: What I'm Missing

Ten seconds:

[0, 10] no good; don't count 0.

[1, 10] good; count 1, count 2, count 3, . . . count 9, count 10. Ten seconds.
I do my thing and you do your thing.
I am not in this world to live up to your expectations,
And you are not in this world to live up to mine.
You are you, and I am I,
and if by chance we find each other, it's beautiful.
If not, it can't be helped.
(Fritz Perls, "Gestalt Therapy Verbatim", 1969)

Numbers don't lie. They hide, but they don't lie.

greg1313
Global Moderator

Posts: 4712
Joined: Wed Oct 22, 2008 4:47 am
Location: London, Ontario, Canada - The Forest City

### Re: What I'm Missing

greg1313 wrote:Ten seconds:

[0, 10] no good; don't count 0.

[1, 10] good; count 1, count 2, count 3, . . . count 9, count 10. Ten seconds.

and how in [0,1] I don't count 0 isn't Closed interval from zero so zero counts

and what is the interval contains the hour between 2 and 3 o'clock does the hour counts right after 2 or from 3

and please explain the counting thing more

thanks
Revo
Newcomer

Posts: 4
Joined: Wed Feb 01, 2012 6:03 am

### Re: What I'm Missing

and see any countdown of NASA and you'll understand me you'll see 11 counts
Revo
Newcomer

Posts: 4
Joined: Wed Feb 01, 2012 6:03 am

### Re: What I'm Missing

Revo wrote:and see any countdown of NASA and you'll understand me you'll see 11 counts

No, when he says "ten", time = 0.
I do my thing and you do your thing.
I am not in this world to live up to your expectations,
And you are not in this world to live up to mine.
You are you, and I am I,
and if by chance we find each other, it's beautiful.
If not, it can't be helped.
(Fritz Perls, "Gestalt Therapy Verbatim", 1969)

Numbers don't lie. They hide, but they don't lie.

greg1313
Global Moderator

Posts: 4712
Joined: Wed Oct 22, 2008 4:47 am
Location: London, Ontario, Canada - The Forest City

### Re: What I'm Missing

Hello, Revo!

Why, when we count 10 seconds down, it becomes 11 counts?

Let's walk through the countdown.

. . $\begin{array}{cccccccccc}\text{Count} && \text{Time} && \text{Explanation} \\ \hline 1 && 0 && \text{start stopwatch} \\ 2 && 1 && \text{1 second passed} \\ 3 && 2 && \text{2 seconds passed} \\ 4 && 3 && \text{3 seconds passed} \\ 5 && 4 && \text{4 seconds passed} \\ 6 && 5 && \text{5 seconds passed} \\ 7 && 6 && \text{6 seconds passed} \\ 8 && 7 && \text{7 seconds passed} \\ 9 && 8 && \text{8 seconds passed} \\ 10 && 9 && \text{9 seconds passed} \\ 11 && 10 && \text{10 seconds passed} \end{array}$

When you start the stopwatch, you count "one" . . . when NO time has passed.
And that is where the extra count comes from.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

This is the basis for a classic trick question . . .

. . The town clock takes 5 seconds to chime 6 o'clock.
. . How long does it take to chime 12 o'clock?

The answer is not 10 seconds.

"It takes 5 seconds to chime 6 o'clock."
Look at the reality of the scenario.

. . $\begin{array}{cccccccccccccccc}\text{chime} & ---- & \text{chime} & ---- & \text{chime} & ---- & \text{chime} & ---- & \text{chime} & ---- & \text{chime} \\ & \text{1 sec} && \text{1 sec} && \text{1 sec} && \text{1 sec} && \text{1 sec}
\end{array}$

You see? .The time is measured between the chimes.

Therefore, to chime 12 o'clock, it will take eleven seconds.

soroban
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Joined: Sun Dec 10, 2006 9:37 am
Location: Lexington, MA

### Re: What I'm Missing

I'll second that!!
I'm just an imagination of your figment...
Denis
Super User

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Joined: Mon Oct 31, 2011 7:29 pm

### Re: What I'm Missing

As for the NASA thing:

Code: Select all
Man counting:     10          9          8          7          6          5          4          3          2          1          0Seconds elapsed:        1           2           3         4            5         6          7          8         9          10
I do my thing and you do your thing.
I am not in this world to live up to your expectations,
And you are not in this world to live up to mine.
You are you, and I am I,
and if by chance we find each other, it's beautiful.
If not, it can't be helped.
(Fritz Perls, "Gestalt Therapy Verbatim", 1969)

Numbers don't lie. They hide, but they don't lie.

greg1313
Global Moderator

Posts: 4712
Joined: Wed Oct 22, 2008 4:47 am
Location: London, Ontario, Canada - The Forest City

### Re: What I'm Missing

So What should I do to count 10 count for the 10 seconds
Revo
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Posts: 4
Joined: Wed Feb 01, 2012 6:03 am