2 out of 3
You are only given the three midpoints of the sides of a triangle. How can you construct the original triangle?
2 out of 3
There are three baskets holding a total of 10 eggs. How many eggs are in each basket?
1 out of 3
This challenge asks you to investigate the total number of cards that would be sent if four children send one to all three others. How many would be sent if there were five children? Six?
2 out of 3
A monkey with peaches, keeps a fraction of them each day, gives the rest away, and then eats one. How long can his peaches last?
1 out of 3
Which armies can be arranged in hollow square fighting formations?
1 out of 3
In the 2020 Olympic Games, sport climbing was introduced for the first time, and something very interesting happened with the scoring system. Can you find out what was interesting about it?
1 out of 3
The final of five articles which containe the proof of why the sequence introduced in article IV either reaches the fixed point 0 or the sequence enters a repeating cycle of four values.
In this third of five articles we prove that whatever whole number we start with for the Happy Number sequence we will always end up with some set of numbers being repeated over and over again.
