Write the following sets in roster form :

$B = \{ x:x$ is a natural number less than ${\rm{ }}6\} $

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$B = \{ x:x$ is a natural number less than $6\} $

The elements of this set are $1,2,3,4$ and $5$ only.

Therefore, the given set can be written in roster form as

$B =\{1,2,3,4,5\}$

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