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Numbers as a product of prime numbers

A prime number is a number that is only divisible by itself and 1. It has no other factors.

All numbers can be broken down into prime factors by using factor trees.

For example:

It does not matter which factors are used at the start of the tree. The same prime numbers will always be found.

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Question 1/5

1. In a factor tree, the branches emanating from a '9' would be:-

a '4' and a '5'

a '1' and a '9'

a '2' and a '3'

'3' and a '3'


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