In the third century BCE, Apollonius of Perga asked how many circles one could draw that would touch three given circles at exactly one point each. It would take 1,800 years to prove the answer: eight ...

Class 11 makes a foundation for the CBSE board exams conducted in class 12 which is considered to be the most crucial stage in the academic life of a student. Class 12 board exam result will help you ...