i know a couple of mathematical tricks...but im looking 4 sumthin extraordinary!!!
135432
do this on a calculator\n142 arabs and 154 jews fought over 69 oil wells (enter those 8 digits) they did this for 5 years (enter X 5) who finally got control? hit enter and turn calculator 180.\n(shelloil)
35190
r u crazy? i dont know maths
575466
Okay smarty here is a good site www.math2.org\n\ngood luck
168206
!!, !!!!!!!! are "multifactorials". They are described in the first attached article.\n\nBriefly,\nn!! = 1 for n=0 or 1,\nn!! = n * (n-2)!! for n>=2.\n\nn!!...! (k "!" signes) = 1, for n<k\nn!!...! (k "!" signes) = n * (n-k)!!...! (k "!" signes)\n\n(2n)!! = n! * 2^n\n(kn)!!...! (k "!" signes) = n! * k^n\n\nSo, we have\n1) 6! = 1*2*3*4*5*6 = 720\n2) 6!! = 2*4*6 = 48\n3) 0! = 1\n4) 5!! = 1*3*5 = 15\n(5!!)!! = 15!! = 1*3*5*7*9*11*13*15 = 2027025\n\nOther factorials are too huge to compute precisely, but we can evaluate them using Stirling formula (second article)\nln n! ~= n*(ln n) - n + (ln(2*pi*n))/2 + 1/(12*n)\n\n5) 5! = 120\n(5!)! = 120! =~ e^(120*ln(120) - 120 + (ln(2*pi*120))/2 + 1/(12*120)) =~ e^457,81 =~ 6.69*10^198\n6) 1234!!!!!!!! = 1234 * 1233 * 1232!!!!!!!! =\n= 1521522 * (154*8)!!!!!!!! =\n= 1521522 * 154! * 8^154 = e^972.43 =~ 2.1*10^422\n\nThus, 6!! - 6! + (5!)! - 1234!!!!!!!! - 0! + (5!!)!! =\n=~ 48 - 720 + 6.69*10^198 - 2.1*10^422 - 1 + 2027025 =~ -2.1*10^422\n\nAnswer: about -2.1*10^422
155314
KNOW YOUR RELATED RATES FOR CALC!! thats one thing that killed me and know your 2-D rotation around a line intergrals.
111500
Make 2 7/15 an improper fraction, flip it over to its reciprical and mulitply the two.\n\nBoy...I hope I got that.  *bits fingernails*
596494
i do its ghay like all the math in the world
297439
With just ! (Factorial), +, -, * and /, it is impossible to get 150 using only 3 5s without the x^2 (Squared) operation (Which means x*x, in case you are in Fifth Grade), or using a '^2' as you say. If you say there is an alternate way, and there really is, then I give up and admit defeat. (I'm sure most others do.) If you are so sure, why don't you post the answer yourself?
53283
Have you checked out mindwiz.com Enter the site then click on fun and games, there's a few cool mind tricks in there
594007
If you think it is 1, then gimmie a hell yeah!!!
44065
Hey i suck at math, but for some reason i can Ace my tests.
494107
Actually I would like to help but the location does matter...\nI cant come dre if its too far.\nAnyways ur idea is really nice....\nIf u r successful rply me...\nI would also try to open a math homewrok club.....\nSend me ur reply...ar\nruchir_rick_d@yahoo.com
405073
uhh,,i will have to ask my maths teacher in college,,\nthanx for the superb question,,
165790
Look up Gauss. Story is he added up 1..100 in grade school and invented the n*(N+1)/2.
551700
This website looks like it's got a lot of proofs.\n\nhttp://www.cut-the-knot.org/pythagoras/index.shtml
308659
The best place to go for math help online that i found was \nhttp://www.math.com\nI hope its useful to you.  I know people on here can tell you the answers, but if you have a test to take, and want to really learn it, go there.
659921
http://www.mathnstuff.com/math/spoken/here/1words/p/p7.htm