### Homes

There are to be 6 homes built on a new development site. They could be semi-detached, detached or terraced houses. How many different combinations of these can you find?

### Let's Investigate Triangles

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

### Teddy Town

There are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?

# Briefcase Lock

##### Stage: 1 Challenge Level:

Josh from Befordshire says:

There are six combinations possible. Because there are three different numbers, you multiply $3$ by $2$ and then by $1$, which makes $6$.

Joshua says:

I think the answer is six combinations and how I did it was I wrote down all the correct combinations:

358

385

538

583

835

853

Jianmin (Henry Park Primary, Singapore) agrees with six combinations, using $3$ x $2$ x $1$.