# Resources tagged with: Permutations

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### There are 16 results

Broad Topics > Decision Mathematics and Combinatorics > Permutations

### Oranges and Lemons, Say the Bells of St Clement's

##### Age 11 to 14Challenge Level

Bellringers have a special way to write down the patterns they ring. Learn about these patterns and draw some of your own.

### Even Up

##### Age 11 to 14 ShortChallenge Level

Consider all of the five digit numbers which we can form using only the digits 2, 4, 6 and 8. If these numbers are arranged in ascending order, what is the 512th number?

### And So on and So On

##### Age 11 to 14Challenge Level

If you wrote all the possible four digit numbers made by using each of the digits 2, 4, 5, 7 once, what would they add up to?

### Painting Cubes

##### Age 11 to 14Challenge Level

Imagine you have six different colours of paint. You paint a cube using a different colour for each of the six faces. How many different cubes can be painted using the same set of six colours?

### Six Times Five

##### Age 11 to 14Challenge Level

How many six digit numbers are there which DO NOT contain a 5?

### 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?

### Flagging

##### Age 11 to 14Challenge Level

How many tricolour flags are possible with 5 available colours such that two adjacent stripes must NOT be the same colour. What about 256 colours?

### Euromaths

##### Age 11 to 14Challenge Level

How many ways can you write the word EUROMATHS by starting at the top left hand corner and taking the next letter by stepping one step down or one step to the right in a 5x5 array?

### Bell Ringing

##### Age 11 to 14Challenge Level

Suppose you are a bellringer. Can you find the changes so that, starting and ending with a round, all the 24 possible permutations are rung once each and only once?

### 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.

### 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.

### 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.

##### Age 14 to 16Challenge Level

A counter is placed in the bottom right hand corner of a grid. You toss a coin and move the star according to the following rules: ... What is the probability that you end up in the top left-hand. . . .

### Master Minding

##### Age 11 to 14Challenge Level

Your partner chooses two beads and places them side by side behind a screen. What is the minimum number of guesses you would need to be sure of guessing the two beads and their positions?

### 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?