Online Math Lessons

Brain Teasers(Suparna)
Can anybody help me out by solving the Brain Teasers at http://www.3smartcubes.com/pages/tests/brainteaser Need your help :(

Help Required(madacus)
Please help with the below maths problem (couldn't help my son with this) Cloister House girls have a bake sale. a drink of squash costs 3p per drink and biscuits costs 5p each. Each girl buys the

Education Game for iPhone(Leonardo Kasperavicius)
Hi there, We've just published an educational game on AppStore. It's called "Pi's Journey", and it's about Number Sets. The main app's proposal is to help the users to distinguish the Numbe

Geometric Progression(junyong)
William started working for a company on 1 January 2003 with an annual salary of 15000 dollar. Every January, the company increases his salary by 6% of he previous year's salary. Calculate his annual

Integral(geriniki)
can u help me by solving this integral :( dx =? :roll:

How many liters(ice_breaker) I got it now. Many thanks teacher :) ...

How many liters(teacher) suppose the jug holds x ml so we have: x * 3/5 + 100 = x * 2/3 3x/5 - 2x/3 = -100 9x/15 - 10x/15 = -100 -x/15 = -100 x = 100*15 = 1500 ml. ...

Prove that: tg20.tg40.tg60.tg80 = 3(mrmohamed) Prove the that tg20.tg40.tg60.tg80 = 3 Hello http://i19.servimg.com/u/f19/12/89/99/77/a ...

arithmetic progression(teacher) use this formula, please: an = a1 + (n - 1)d a1 = 15 n = 10 d = -1.5 ...

arithmetic progression(jack15379) yeah...this is under A.P....these are all the details i have...can u pls help me out ...