Algorithms

Keep constructing triangles in the incircle of the previous triangle. What happens?

Vedic Sutra is one of many ancient Indian sutras which involves a cross subtraction method. Can you give a good explanation of WHY it works?

However did we manage before calculators? Is there an efficient way to do a square root if you have to do the work yourself?

How can you quickly sort a suit of cards in order from Ace to King?

Can you think like a computer and work out what this flow diagram does?

Can you interpret this algorithm to determine the day on which you were born?

Can you crack these very difficult challenge ciphers? How might you systematise the cracking of unknown ciphers?

Sixth challenge cipher