# Resources tagged with: Permutations

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### There are 8 results

Broad Topics > Decision Mathematics and Combinatorics > Permutations

### Ip?

##### Age 16 to 18Challenge Level

Seventh challenge cipher

### Ding Dong Bell

##### Age 11 to 18

The reader is invited to investigate changes (or permutations) in the ringing of church bells, illustrated by braid diagrams showing the order in which the bells are rung.

### Card Shuffle

##### Age 11 to 16

This article for students and teachers tries to think about how long would it take someone to create every possible shuffle of a pack of cards, with surprising results.

##### Age 14 to 18Challenge Level

Some relationships are transitive, such as `if A>B and B>C then it follows that A>C', but some are not. In a voting system, if A beats B and B beats C should we expect A to beat C?

### Chances Are

##### Age 14 to 16Challenge Level

Which of these games would you play to give yourself the best possible chance of winning a prize?

### Factoring a Million

##### Age 14 to 16Challenge Level

In how many ways can the number 1 000 000 be expressed as the product of three positive integers?

### 396

##### Age 14 to 16Challenge Level

The four digits 5, 6, 7 and 8 are put at random in the spaces of the number : 3 _ 1 _ 4 _ 0 _ 9 2 Calculate the probability that the answer will be a multiple of 396.