Fun Math Time - Printable Version

Fun Math Time - Printable Version

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Fun Math Time - Hazzy - 2010-02-04

Here's a list of numbers.

Code:
100; 125; 128; 160; 200; 250; 256; 320; 400; 500

What's the next number? What was the number before 100?
All numbers in this sequence are real, positive numbers. the sequence is always increasing, there is a finite amount of numbers in the list, 100 is not the start.

Go. Wink

Fun Math Time - Sn1perJohnE - 2010-02-04

575 is next, and the number before 100 was....50?

Fun Math Time - Hazzy - 2010-02-04

Both are wrong, but I realize why this is a lot easier than I meant it to be. D:

Fun Math Time - Sn1perJohnE - 2010-02-04

Hazzy Wrote:Both are wrong, but I realize why this is a lot easier than I meant it to be. D:

Correction, 625 is next (500 / .8)

before 100, it is 80. (100 ^ .8)

Sequence is .8>.9765625>.8>.8>.8>.9765625 repeated.

Fun Math Time - Hazzy - 2010-02-04

625's off, but 80's right. o-o

Fun Math Time - Sn1perJohnE - 2010-02-04

Are you sure? Rolleyes

seems right to me following the sequence, unless im doing the math for the final number wrong.

Fun Math Time - Riyuran - 2010-02-04

512 is next.
80 is before 100.
The fail in this thread makes me laugh. Big Grin

Fun Math Time - Sn1perJohnE - 2010-02-04

NVM, its 600 even, sequence is now +25+3+32+40 (time 2 to continue)

Fudge, i missed a number, 512 is correct (6x2=12+500)

Fun Math Time - Hazzy - 2010-02-04

Sn1perJohnE Wrote:NVM, its 600 even, sequence is now +25+3+32+40 (time 2 to continue)

Wut @ randomly removing me image.

Fun Math Time - Sn1perJohnE - 2010-02-04

Wait, is 600 right? a_@ I know the sequence is for sure. Gah i fucking hate math (and a statistics class is heading my way >_>)

Fun Math Time - HellenzSin - 2010-02-04

80 and 512, was expectign something harder.

Fun Math Time - Sn1perJohnE - 2010-02-04

HellenzSin Wrote:80 and 512, was expectign something harder.

It could have been, its a basic sequence, with the only real challenge being the x2 part.

If there was more variation in how the sequence progressed, it can be harder.

Fun Math Time - Hazzy - 2010-02-04

If you want a challenge, tell me the first and last numbers in the sequence.

Fun Math Time - Russt - 2010-02-04

Well, the sequence is all numbers 2^m * 5^n, but there's nothing to indicate where it starts or ends. I would assume that the first is 1. Maybe the last is 100000000?

Fun Math Time - Shidoshi - 2010-02-05

the sequence is just taking a few numbers as "start" say 100, 125, 128, 160 and the next four numbers will be the double of those numbers: 200, 250, 256, 320. and repeating.

There is no reason for the sequence to be limited.

Fun Math Time - Hazzy - 2010-02-05

Russt Wrote:Maybe the last is 100000000?

Wut.
I got the sequence from a list of factors of 1,000,000,000 that I found via my calculator + lonely lunch. Should I check my room for bugs?