Could someone suggest me websites, forums, books and other materials for IMO preparation!

You may send a $Private-message$ to me.

Thanks in advance

## Search found 17 matches

- Sat Apr 14, 2018 10:48 pm
- Forum: Higher Secondary Level
- Topic: I need help
- Replies:
**0** - Views:
**4149**

- Sat Apr 14, 2018 10:12 pm
- Forum: Secondary Level
- Topic: \tan law
- Replies:
**9** - Views:
**5650**

### Re: \tan law

Hello brother, could you send the working of your result. I mean how you got to such result.

- Sun Apr 08, 2018 9:04 am
- Forum: Higher Secondary Level
- Topic: Resources
- Replies:
**1** - Views:
**3567**

### Resources

Can someone provide me resources and links for $IMO$ preparation

- Sun Apr 08, 2018 8:44 am
- Forum: Higher Secondary Level
- Topic: A PROBLEM
- Replies:
**5** - Views:
**5059**

### Re: A PROBLEM

If \[x_{1}+x_{2}+x_{3}+x_{4}=0 \] and \[x_{1}^{2}+x_{2}^{2}+x_{3}^2+x_{4}^{2}=1 \] Then what is the biggest value of\[x_{1}^{3}+x_{2}^{3}+x_{3}^{3}+x_{4}^{^{3}}.\] Get all three equations in the form \[x_{1}+x_{2}+x_{3}=-(x_{4})\] Similarly next, Solve third equation by \[a^3+b^3+c^3-3abc\] And in ...

- Sat Apr 07, 2018 12:44 pm
- Forum: Secondary Level
- Topic: Greatest Positive Integer $x$
- Replies:
**7** - Views:
**4511**

### Re: Greatest Positive Integer $x$

I did a very bad mistake.samiul_samin wrote: ↑Thu Apr 05, 2018 7:26 pmWhy are you saying it is repeated 88789 times?I know it is wrong but how did you get it?Can you explain?Mathlomaniac wrote: ↑Thu Mar 08, 2018 10:34 pmGreatest possible integer value of X can be 88783 because 23 is repeated 88789 times in 2000!

- Mon Mar 12, 2018 10:34 pm
- Forum: Higher Secondary Level
- Topic: 3 problems of probability
- Replies:
**15** - Views:
**8928**

### Re: 3 problems of probability

Answer of first and second would be 11/12

- Sun Mar 11, 2018 10:11 pm
- Forum: Secondary Level
- Topic: Triangle geometry
- Replies:
**5** - Views:
**3993**

### Re: Triangle geometry

Using ceva's theorem answer came 0.

- Sun Mar 11, 2018 10:07 pm
- Forum: Higher Secondary Level
- Topic: Quad in square
- Replies:
**4** - Views:
**5129**

### Re: Quad in square

We will use a simple lemma to prove it. Lemma : In any right angled triangle with the sides $a,b,c$ where $c$ is a hypotenuse.Then $\sqrt{2}c \geq a+b$.(Prove the lemma yourself by $A.M-G.M$.) Now applying it in $\Delta EBF$, we get, $\sqrt{2}EF \geq EB+BF$. Likewise,$\sqrt{2}FG \geq FC+CG$,$\sqrt{...

- Sun Mar 11, 2018 9:51 pm
- Forum: Higher Secondary Level
- Topic: perimeter of an isosceles tri.
- Replies:
**1** - Views:
**3865**

### Re: perimeter of an isosceles tri.

It would be an right angle isosceles triangle with BC =22

- Sun Mar 11, 2018 12:53 pm
- Forum: Higher Secondary Level
- Topic: Find $\tan2\theta$
- Replies:
**4** - Views:
**4740**

### Re: Find $\tan2\theta$

0+0

Take theetha 0

Take theetha 0