Search found 24 matches
- Thu Jan 24, 2013 11:05 pm
- Forum: Secondary Level
- Topic: Problem...!!!...
- Replies: 0
- Views: 1644
Problem...!!!...
Show that Q,group of rational number under addition,has no proper subgroup of finite index.
- Sun Dec 09, 2012 10:32 pm
- Forum: Introductions
- Topic: Introduction
- Replies: 1
- Views: 3104
Introduction
Hi,I an Utsho.I am a new one in this forum.I am interested in Mathematics.But I am an absolute beginner.So,I need help from this forum.For your information, I read in class 9.I am very happy to join here.thanks.
- Sun Dec 09, 2012 10:27 pm
- Forum: Secondary Level
- Topic: My first posted problem.
- Replies: 6
- Views: 4490
My first posted problem.
The numbers 1,2,......,50 are written in a blackboard.Each minute any two numbers are erased and their positive difference is written instead.At the end one number remains.which?
- Thu Dec 06, 2012 1:37 pm
- Forum: Primary Level
- Topic: An easy problem
- Replies: 6
- Views: 10816
Re: An easy problem
28 minutes