A deceptively simple optical illusion is challenging internet users to find all the hidden '3's within a seemingly ...

Learn how to multiply 2-digit numbers mentally with this step-by-step guide for kids. Discover simple techniques to boost ...

Dialling two-digit number can summon emergency help without saying a word. Cambridgeshire Police said last month it alone had 40 silent 999 calls where they were needed to attend urgently.

Proposes a new algorithm of serial modular multiplication based on signed-digit (SD) number system using Booth recoding method. By introducing a p-digit radix-two SD number system, a modular addition ...