Question

If you need five matchsticks to make a model of $2$, find the number of matchsticks you need to make 'n' such models.

Answer 1

A model $2$ is made using 5 matchsticks as shown below.We would always require 5 matchsticks to make a model of $2$. So, to make 'n' models of $2$’s we need '$5n$' matchsticks.