This is the 313th most frequent Danish word.
færre
"Færre" means "fewer" in English.
Here, 'færre' is used to compare a reduced quantity of countable items (apples) over a period.
Der er færre æbler i kurven nu.
There are fewer apples in the basket now.
In this sentence, 'færre' is modifying a plural, countable noun (tasks) to indicate a smaller number.
Vi har færre opgaver denne uge.
We have fewer tasks this week.
'Færre' is appropriately describing a decrease in the number of countable entities (cars).