President Trump issued an executive order declaring that the U.S. government would only recognize a person’s sex assigned at birth.

Five must-do, but rarely revealed, tips to create a TED Talk or presentation that is polished, engaging, and unforgettable.

Download the detailed syllabus PDF here. Check the section-wise topics, exam pattern, preparation strategy, and best books.

In the late 19th century, Karl Weierstrass invented a fractal-like function that was decried as nothing less than a “deplorable evil.” In time, it would transform the foundations of mathematics.