Math is very biased

Imagine two people got married to each other and had two children. If one is a girl, what is the probability that the other child is also a girl? Instinctively, you should respond "1/2!" and you're right. Except... you're not. Think of all the possible ways that a girl could be in the family. There's … Continue reading Math is very biased →

Trains purposely crashing into each other to kill a bee

This is a story on how two trains, holding a couple hundred people, collided with each other and the only casualty was the bee that was having fun in the middle...

2 and 3, what could be worse?

Take two numbers that add to 2 and multiply to 3. What is the sum of the reciprocals of these two numbers? The "truly mind-blowing" way to do this is like how I did it, going through the quadratic formula and such. Let a be one of the numbers, therefore the other number is 2-a. … Continue reading 2 and 3, what could be worse? →

Happy birthday, me!

I'll let you guess my age now. This is Enigma 1429 (because my birthday falls on April 29th, so 429.). DIX is a semiprime (prime * prime), CENT is a perfect square, and MILLE is a perfect cube. None of them start with a 0. What are the values of DIX, CENT, and MILLE respectively? … Continue reading Happy birthday, me! →

DLP DLP DLP

DLP, or Discrete Logarithm Problem, has an equation used in cryptography. The equation is: y = gx mod p Where y, g, x and p are all integers, and g and p are large primes, like 35201546659608842026088328007565866231962578784643756647773109869245232364730066609837018108561065242031153677 or 14083359469338511572632447718747493405040362318205860500297736061630222431052998057250747900577940212317413063. Now, with the value of g, x, and p known, computers can easily calculate for y. The … Continue reading DLP DLP DLP →

Collatz by Lothar Collatz

I am not creative. The Collatz Conjecture states that for any positive integer n, the Collatz sequence will eventually reach 1. The Collatz sequence is: Yee So if n is even, divide it by two, and if n is odd, multiply it by three and add one. So, for example, 36, 18, 9, 28, 14, … Continue reading Collatz by Lothar Collatz →

How small would a calculator have to be to become a black hol?

I must understands what yoctometer length look lik.

The answer to Enigma #618

The answer to https://mathweneedtoknow.home.blog/2021/04/25/enigma-618-mysterious-divisor/ answer provided by me. Thank you to the many people at https://enigmaticcode.wordpress.com/.

Enigma 618: Mysterious divisor

This was a very complicated yet fun-to-do problem. The answer will be posted next.

The Life Game: Coming soon in 2096

DISCLAIMER: I said I would do a post on normal numbers. Tomorrow. Promise. Before I start, I would like to say that I own none of the images and gifs. They are all by Wikipedia. I already did a post on Conway's Game of Life, but it was years ago and I wasn't very good … Continue reading The Life Game: Coming soon in 2096 →