# April, 2012

## The Secrets of the Mathematical Ninja: James Martin and the 952 Countdown puzzle.

Countdown puzzle: Make 952 from 100, 75, 50, 25, 6 and 3 Have a go at this one before you read on. It's pretty straightforward to make 953 (exactly as the poor antagonist, Gerald, in this story does): 100 × (6 + 3) = 900 900 + 50 = 950

## The Secrets of the Mathematical Ninja: James Martin and the 952 Countdown puzzle.

Countdown puzzle: Make 952 from 100, 75, 50, 25, 6 and 3 Have a go at this one before you read on. It's pretty straightforward to make 953 (exactly as the poor antagonist, Gerald, in this story does): 100 × (6 + 3) = 900 900 + 50 = 950

## The Secrets of the Mathematical Ninja: James Martin and the 952 Countdown puzzle.

Countdown puzzle: Make 952 from 100, 75, 50, 25, 6 and 3 Have a go at this one before you read on. It's pretty straightforward to make 953 (exactly as the poor antagonist, Gerald, in this story does): 100 × (6 + 3) = 900 900 + 50 = 950

## Free for all Friday

It's the last Friday in April. That means it must be exam season just around the corner. How's your revision going? What can I help you with this week? Just drop me a comment below and I'll do what I can to answer it.

## The Law of Inverse Ninjas

Million-to-one shots come up nine times out of ten. - Terry Pratchett While researching rules for ninjas to live by (don't ask), I came across a mathematical phenomenon I'd never noticed noticing. It's this: The Law of Inverse Ninjas: The probability of a group of ninjas winning a battle in

## Secrets Of The Mathematical Ninja: Adjusting using errors.

Your average ninja (if there is such a thing) doesn't need to do the swirly-sword manoeuvre. If he wanted, he could just run you through and you'd be dead before you even noticed he was there. But that's rather rude and unsophisticated, the kind of thing a pirate might do.

## Free for all Friday

Thank Gauss it's Friday! Well, what can I help you with this week? Just drop me a comment below and I'll do what I can to answer it.