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Lewis was packing his bag for a school trip. He packed four tops, two pairs of jeans and a pair of shorts.
"I will be able to have a different outfit each day," Lewis said to his mother.
What is the most number of days that he can be away for, on the trip?
Six new homes are being built! They can be detached, semi-detached or terraced houses. How many different combinations of these can you find?
This challenge is to design different step arrangements, which must go along a distance of 6 on the steps and must end up at 6 high.
Suppose there is a train with 24 carriages which are going to be put together to make up some new trains. Can you find all the ways that this can be done?