At a convention, 16 of 36 delegates arrived with pre-printed name badges. Half of the remaining delegates made their own, hand-written name badges. How many delegates were not wearing name badges?
There were 36-16=<<36-16=20>>20 without pre-printed name badges.
Then 20/2=<<20/2=10>>10 made hand-written badges
There were 20-10=<<20-10=10>>10 with no name badge.
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