Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#9726 Re: Guestbook » How old are you bobbym? » 2011-12-13 09:44:28

i don't agree that they treat us teenagers as infants,they treat us as fetuses,no,rather as embryos. big_smile

#9727 Re: Help Me ! » Equations with parenthesis? » 2011-12-13 09:39:45

your welcome.i like this song very much,especially the verse "This memory of Eden haunts us all".i have been listening to this song for i think four days now.

#9728 Re: Guestbook » How old are you bobbym? » 2011-12-13 09:37:57

i think not.in some countries and nations,they marry early,some at 16,some at 15,some even at 13 and less. o.O

#9730 Re: Guestbook » How old are you bobbym? » 2011-12-13 09:34:23

oh,yes.you're right.i never asked you if you are married.it has crossed my mind many times,but i always forgot (plus it would be awkward). so,bobbym,are you married?

#9731 Re: Guestbook » How old are you bobbym? » 2011-12-13 09:31:16

why not.i mean your age is perfect for dating... big_smile

i'm just wondering...if you are as old as you say you are (and i believe you!) than how come you haven't yet found a wife?

#9732 Re: Guestbook » How old are you bobbym? » 2011-12-13 09:27:22

oh,and i thought you got a date.

#9735 Re: Maths Is Fun - Suggestions and Comments » Zoomable Number Line » 2011-12-13 09:05:47

hi MIF

i think that there should be zoom in and zoom out buttons.a feature that would be very helpful is being able to draw intervals to find their intersection,but i'm not sure how doable that is... big_smile

#9736 Re: Help Me ! » Perimeter of Trapezium » 2011-12-12 03:23:33

hi gyanshrestha

how'd you get that?

#9737 Re: Help Me ! » probability on dice » 2011-12-06 09:07:00

well not exactly.

example:

calculate 5+6

5=3+4
6=1+3

5+6=3+4+1+3=3+(4+1)+3=3+9+3=12+3=11

see what i mean?

#9738 Re: Help Me ! » probability on dice » 2011-12-06 07:53:53

wait i got it. couldn't we just take the opposite case (when all of the dice show a number less than or equal to four) then calculate the probability of that happening (which is (2/3)^n) and just go back to the original and doing : 1-whatwegot=1-(2/3)^n ???

#9740 Re: Help Me ! » probability on dice » 2011-12-05 09:49:31

ok i get that.i'm asking if there's a formula to derive the number of 'correct answers' in the case of n dice being thrown?

#9741 Re: Help Me ! » probability on dice » 2011-12-05 08:16:31

hi bobbym

is there any way to fin this numerically,for example in a case where the dice is thrown n times?

#9742 Re: Help Me ! » Equations with parenthesis? » 2011-12-03 09:29:28

let's.

hey,try replacing every 'no' part with a 'hi' in the post #2850 and see what you get

#9743 Re: Help Me ! » Equations with parenthesis? » 2011-12-03 09:15:33

hi Sarah,hi bobbym

how are you my friends?

may i notice something?hope so because i am going to.most of the 'talking' here is done by bobbym and Sarah just says 'ok' or 'k' or 'okay'.

and btw,English grammar is much easier than Serbian! you wouldn't know how many exceptions there are for everything.It's crazy,huh?

#9744 Re: Help Me ! » Exponents » 2011-12-03 05:35:38

hi bobbym

i think it's that. wink

#9745 Re: Help Me ! » How to hide an answer?? » 2011-11-22 07:42:06

hi guys

can i hide the hide brackets:

[/hide]

nope...rolleyes dunno

let me be bold enough to post this:

doesn't work... sad

of course,code:

nope,doesn't work,and won't work with quotes either,so i guess what bobbym posted is the only way.on another forum i saw tags which allow you to see all of the text without all the BBCode. That should go into the suggestion box!

#9746 Re: Guestbook » How old are you bobbym? » 2011-11-12 13:21:42

unfortunately not.

but infinity has many of everything.except infinity.we don't know how many infinities infinity has! big_smile

#9747 Re: Help Me ! » sgn(x)!!! » 2011-11-12 13:12:46

nice explanation! thanks rya!

i guess sgn(x) can be done similairly.

#9748 Re: Help Me ! » doubt on irrational » 2011-11-12 13:11:18

my tests are in another topic! don't change the topic!

#9749 Re: Guestbook » How old are you bobbym? » 2011-11-12 11:22:19

1024 has even more two's! 10 2's!

#9750 Re: Help Me ! » doubt on irrational » 2011-11-12 11:18:41

who said they are the same?i said that when you cube the identity they tell you the same thing,and i am correct because when we changed the sign of the term with sqrt(2) in it on the LHS,all the terms on the RHS containing sqrt(2) changed their signs as well!

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