Math, Engineering, Computers, and Random Stuffs

  Image Retrieved from:  https://cifertech.net/wp-content/uploads/2021/07/unnamed.png THE SCENARIO...     Cryptocurrency is now a new thing to invest and grow your money. As I did some research about it, I stumbled across on this crypto called Duino-Coin. Duino-Coin is a  for-fun project that is designed to be mined by low power devices. It was founded in 2019 by a team of young developers which uses the name revox. The project aims to be a good starting point for the newbies (like me) to get a better grasp about how crypto mining works.     "A simple, eco-friendly, centralized coin that can be mined with almost anything" GETTING STARTED...     By browsing on their website at  https://duinocoin.com  , it gives a comprehensive, step-by-step guide on how to setup your very first mining rig, you can even start mining immediately once you fully set-up your account and the application that is used to mine.     The very first th...

  THE SCENARIO... When I was in my elementary days, I was stumbled upon by this lesson in mathematics called "divisibility rules". In that lesson, the reference book states the divisibility rules of 2,3,4,5,6,8,9,10, and even 11 and 12. I was wondering why there is no rules in case of seven.       After some time of thinking, I asked my math teacher about the matter and he told me that "Just follow what is written on the book. Is there a rule about divisibility rule of seven? No right? then there's no rule about it." This actually sparks my interest in mathematics as I grew older and always thinking about why there is no seven.     Years later when I turned seventh grade, I somehow remembered this divisibility question that I always wondered when I was a kid and did a little research about it. It turns out there exist a rule that a number can be divided by seven. DIVISIBILITY RULES OF 7 1) Take a number, lets say 546.  2) Get the last digit, multi...