What I'm Missing

[Revo]

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

please Help
thanks

[greg1313]

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.

[Revo]

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 Don't understand please more Explanation please

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]

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

[greg1313]

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

No, when he says "ten", time = 0.

[soroban]

Hello, Revo!

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

Let's walk through the countdown.


. .


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.

. .


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

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

[Denis]

I'll second that!!

[greg1313]

As for the NASA thing:

Code: Select all

Man counting:     10          9          8          7          6          5          4          3          2          1          0
Seconds elapsed:        1           2           3         4            5         6          7          8         9          10


[Revo]

So What should I do to count 10 count for the 10 seconds