# Kid's Math

Discussion in 'Computer Support' started by johndieb@gmail.com, Sep 20, 2007.

1. ### Guest

Problem 1. Find the Pattern.

7, 28, 24, 45

Problem 2. Supply the missing numbers.

120 60 180 90 _____ _____ 405

, Sep 20, 2007

2. ### GordonGuest

This one's easy.

now go away and do your OWN homework....

Gordon, Sep 20, 2007

3. ### AlfredGuest

Alfred, Sep 20, 2007
4. ### MolemanGuest

Find a kid to do it.

Moleman, Sep 20, 2007
5. ### why?Guest

Too easy.

Write it down and watch carefully the relation between the numbers.

Me

why?, Sep 20, 2007

Oh, all right...270 135

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....a help file of info about MP3s, recording from
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7. ### why?Guest

What's the point without how.

Me

why?, Sep 20, 2007

The point is the kid learning how to do this himself.

Blinky the Shark, Sep 21, 2007
9. ### Tina PetersGuest

I pay people to do my thinking! :-D

--Tina

Tina Peters, Sep 21, 2007

If you'd done that in school, you wouldn't know anything. (Which is a
possibility; I don't know.)

Blinky the Shark, Sep 21, 2007
11. ### why?Guest

Doesn't giving the answer avoid having to get the 'how'? Not posting
either was the point

Me

why?, Sep 21, 2007

IMO.

Blinky the Shark, Sep 21, 2007
13. ### phrogeeGuest

Does this help?

120 60 180 90 666 666 405. Obviously, the sequence is the polynomial

(2990160 - 6888924 x + 5902372 x^2 - 2446935 x^3 + 525955 x^4 - 56181
x^5 + 2353 x^6) / 240

evaluated at x=1, x=2, x=3, etc.

phrogee, Sep 22, 2007

1. sum of two preceding (180 + 90 = 270)
2. result divided by 2 (270/2 = 135)

1. sum of two preceding (270 + 135 = 405)
etc.

--

____________________________

....a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico

15. ### why?Guest

It's simpler than that, don't need the addition, although it's an
alternative option it wasn't the 1 I saw right away.

I started with step 2 in place of your step 1. Then see what happens

<snip>

Me

why?, Sep 22, 2007
16. ### who'sthatGuest

Polynomial? This is a standard question on a college entrance exam and
you'd fail miserably.

who'sthat, Sep 22, 2007
17. ### Guest

, Sep 22, 2007
18. ### who'sthatGuest

who'sthat, Sep 22, 2007

You mean...

1.5 * 90 = 135
1.5 * 180 = 270

?

--

____________________________

....a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico

20. ### why?Guest

Yes, only 1 operation the same for each pair.

Me

why?, Sep 22, 2007