Being resilient

There are 51 NRICH Mathematical resources connected to Being resilient
Two and Two
problem

Two and Two

Age
7 to 16
Challenge level
filled star filled star filled star
How many solutions can you find to this sum? Each of the different letters stands for a different number.
Which Scripts?
problem

Which Scripts?

Age
7 to 11
Challenge level
filled star empty star empty star
There are six numbers written in five different scripts. Can you sort out which is which?
Nine Colours
problem

Nine Colours

Age
11 to 16
Challenge level
filled star filled star filled star
Can you use small coloured cubes to make a 3 by 3 by 3 cube so that each face of the bigger cube contains one of each colour?
Where can we visit?
problem

Where can we visit?

Age
11 to 14
Challenge level
filled star filled star empty star
Charlie and Abi put a counter on 42. They wondered if they could visit all the other numbers on their 1-100 board, moving the counter using just these two operations: x2 and -5. What do you think?
Funny Factorisation
problem

Funny Factorisation

Age
11 to 16
Challenge level
filled star filled star empty star
Using the digits 1 to 9, the number 4396 can be written as the product of two numbers. Can you find the factors?
Latin Numbers
problem

Latin Numbers

Age
14 to 16
Challenge level
filled star filled star filled star
Can you create a Latin Square from multiples of a six digit number?
Mixed-up Socks
problem

Mixed-up Socks

Age
5 to 7
Challenge level
filled star filled star empty star
Start with three pairs of socks. Now mix them up so that no mismatched pair is the same as another mismatched pair. Is there more than one way to do it?
Four Triangles Puzzle
problem

Four Triangles Puzzle

Age
5 to 11
Challenge level
filled star empty star empty star
Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?
Maze 100
problem

Maze 100

Age
7 to 11
Challenge level
filled star filled star empty star
Can you go through this maze so that the numbers you pass add to exactly 100?
Number Lines in Disguise
problem

Number Lines in Disguise

Age
7 to 14
Challenge level
filled star filled star empty star
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?