Latest edition of NCERT Class 9 Maths Chapter 1 Number System is available here. Download the full chapter in PDF format along with the accurate NCERT Solutions for the chapter.

Check CBSE Class 9 Maths extra questions Chapter 1 - Number System (NCERT based). These questions are important for CBSE 9th Maths Annual Exam 2020-21.

Almost 30 years ago, a group of Kaktovik students invented a numbering system that reflected the way they counted in Iñupiaq and made math more intuitive for them. Soon, anyone in the world will ...

Unlike our everyday counting system that uses tens, binary uses just two numbers, 0 and 1. Learn more with BBC Bitesize. Suitable for KS3 students.

The natives of a remote Polynesian Island invented a binary number system, similar to the one used by computers to calculate, centuries before Western mathematicians did, new research suggests ...

India, by adding zero to the positional number system, unleashed the true power of numbers, advancing mathematics from infancy to adolescence, and from rudimentary toward its current sophistication.

Strange, long-forgotten numbers called quaternions are undergoing a revival in computer graphics, math, and physics.

The twin primes conjecture is one of the most important and difficult questions in mathematics. Two mathematicians have solved a parallel version of the problem for small number systems.