Write the following sets in roster form :
$\mathrm{F} =$ The set of all letters in the word $\mathrm{BETTER}$
Write the following sets in roster form :
$\mathrm{F} =$ The set of all letters in the word $\mathrm{BETTER}$
$F =$ The set of all letters in the word $BETTER$
There are $6$ letters in the word $BETTER,$ out of which letters $E$ and $T$ are repeated.
Therefore, this set can be written in roster form as
$F=\{B, E, T, R\}$
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