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Just a quick math question

Is the number " 3.34344344434444..." rational or irrational?

Note: Just cause i am getting different awsers, plz state the reason. Thanks!

June 21, 2012

14 Comments • Newest first

UglierBetty

[quote=AmyrIin]irrational. those who say otherwise need remedial math lessons[/quote]

[url=http://www.basilmarket.com/forum/2433844/1/40670975Hell_Yes_The_Scores_Are_In.html#40670975]You just love acting superior to people, don't you.[/url]

Reply June 21, 2012
ChildCrusade

@CrayonScribble:
but you can't put a summation formula as a fraction. That's like saying put a polynomial as a fraction.
I should know how to do this, since I just had a final on it. But it's summer, so all information left my brain xD

@MellowYellow:
The thing is, he said 3.14159. No ... after the 9, so we have to assume that it is not continuous and stops at 9.

Reply June 21, 2012
LowWillpower

[quote=Kingsleh]Kinda weird that you're taking an AP class and be smart enough to know how to solve most of the problems, yet so dumb that you don't know that pi is nonrepeating and continuous.[/quote]
He said he knew pi was irrational. They didn't give pi.

Reply June 21, 2012
ThePepsi

[quote=bulletgensi]Alright thx guys: This question was on my finals today for grade 10 Ap Which of the following is irrational, " Options were: ( A. 3.343443444... B. 3.14159 C. -100 D. 5/4)
Of course the last two are out of the choices. Choice A and B had me stuck. The fact that i know pi is irrational but then also the fact that it may just be the number 3.14159 and stops right there. This question itself took me like 10min just debating to myself which anwser to take X_X[/quote]

You're in Grade 10 AP and you had trouble with this?
Er..

Reply June 21, 2012
CrayonScribble

[quote=ChildCrusade]If you use geometric series, you can come up with a formula for that number 3.343443444...
but since it's not ending, it's irrational.
3.14159 would be the answer if they put 3.1419.... as that is just pi.
But since it ends, it's not the answer.[/quote]

Not quite, it could be rational.

0.33333333 onwards = 1/3

We don't know if this could be expressed as a fraction, it might be able to. I remember reading a way to find out in a maths paper that my friend was doing but I'm not too keen on maths myself.

Reply June 21, 2012
ChildCrusade

[quote=bulletgensi]Alright thx guys: This question was on my finals today for grade 10 Ap Which of the following is irrational, " Options were: ( A. 3.343443444... B. 3.14159 C. -100 D. 5/4)
Of course the last two are out of the choices. Choice A and B had me stuck. The fact that i know pi is irrational but then also the fact that it may just be the number 3.14159 and stops right there. This question itself took me like 10min just debating to myself which anwser to take X_X[/quote]

If you use geometric series, you can come up with a formula for that number 3.343443444...
but since it's not ending, it's irrational.
3.14159 would be the answer if they put 3.1419.... as that is just pi.
But since it ends, it's not the answer.

Reply June 21, 2012
radkai

Irrational mang..

Reply June 21, 2012
Rezoina

Irrational due to no repeating decimals; that 343 pattern doesn't repeat anywhere else on the decimal. Things like e^x and pi are irrational, if you need examples though.

Reply June 21, 2012 - edited
bulletgensi

Alright thx guys: This question was on my finals today for grade 10 Ap Which of the following is irrational, " Options were: ( A. 3.343443444... B. 3.14159 C. -100 D. 5/4)
Of course the last two are out of the choices. Choice A and B had me stuck. The fact that i know pi is irrational but then also the fact that it may just be the number 3.14159 and stops right there. This question itself took me like 10min just debating to myself which anwser to take X_X

Reply June 21, 2012 - edited
AmyrIin

irrational. those who say otherwise need remedial math lessons

Reply June 21, 2012 - edited
rlllam7

it is not repeating, therefore irrational

Reply June 21, 2012 - edited