## Search found 17 matches

- Sat Jul 08, 2017 7:31 pm
- Forum: Combinatorics
- Topic: need the solution
- Replies:
**1** - Views:
**436**

### need the solution

x takes part in three subjects physics, chemistry and mathematics.Each of the subjects is of 100 marks.How many ways can he obtain 200 out of 300?

- Mon Dec 12, 2016 11:40 pm
- Forum: Divisional Math Olympiad
- Topic: regional mo 2015
- Replies:
**3** - Views:
**432**

### Re: regional mo 2015

Disclose the first approach

- Sat Dec 10, 2016 12:49 pm
- Forum: Divisional Math Olympiad
- Topic: regional mo 2015
- Replies:
**3** - Views:
**432**

### regional mo 2015

this is a problem of regional math olympiad 2015

- Thu Oct 27, 2016 3:28 pm
- Forum: Secondary Level
- Topic: why I'm getting 2 answers contrary to each other
- Replies:
**4** - Views:
**420**

### Re: why I'm getting 2 answers contrary to each other

You said that my second result is not always true.So if it is true in some cases, then wont the theorem be wrong?

- Wed Oct 26, 2016 9:53 pm
- Forum: Secondary Level
- Topic: why I'm getting 2 answers contrary to each other
- Replies:
**4** - Views:
**420**

### Re: why I'm getting 2 answers contrary to each other

Perhaps, nobody is getting my question.In the attachment you can see I got two results but they are contrary.The theorem is sum of any two sides of a triangle is greater than twice of the median drawn to the third side.Firstly, I proved that.It was AB+AC>2AD.However, interesting thing was in the sec...

- Wed Oct 26, 2016 8:02 am
- Forum: Secondary Level
- Topic: why I'm getting 2 answers contrary to each other
- Replies:
**4** - Views:
**420**

### why I'm getting 2 answers contrary to each other

It is an extra of general math on chapter 6.3

- Sun Oct 09, 2016 2:17 pm
- Forum: Higher Secondary Level
- Topic: external section formula
- Replies:
**6** - Views:
**653**

### Re: external section formula

Lets talk out of vectors.Supposing if a point C divides a line segment AB externally what would it mean?Will it mean C is closer to A or B?Why would it mean so?

- Fri Oct 07, 2016 1:12 pm
- Forum: Higher Secondary Level
- Topic: external section formula
- Replies:
**6** - Views:
**653**

### Re: external section formula

How can a ratio be negative?Is it because of different direction?

- Fri Oct 07, 2016 2:41 am
- Forum: Higher Secondary Level
- Topic: external section formula
- Replies:
**6** - Views:
**653**

### Re: external section formula

I don't know which is correct or why that would be correct.

- Fri Oct 07, 2016 2:40 am
- Forum: Higher Secondary Level
- Topic: external section formula
- Replies:
**6** - Views:
**653**

### Re: external section formula

the second part of that external section formula.