They wear them as part of their uniform, in most cases to resemble an old time dealer.
This depends. Some wear armbands to stop the sweat from dripping down their hands, wear it to look cool... and lastly, some wear armbands to protect their arm from rubbing/sticking against the bass.
Black armbands used to be warn during mourning, but they are rare now.
Currently hiring for dealers in Las Vegas, Nevada are Palms Casino and Resort, Tuscany Hotel & Casino, Station Casino, Riviera Hotel and Casino, and many more.
they are commonly called croupier straps. Named after the dealers at the casino ('craps' table') who are required to wear the armbands to keep there sleaves up, prooving they aren't hiding cards.
some do i am sure.
When it comes to casino card games, there are a lot of games which require card dealers. Two of the more popular card games involving dealers are Blackjack and Poker.
It's up to your school.
To segregate them.
the answer is yes and Learn english
Magnetic bands for balance
Do you mean on their t-shirts? If so, they are attached to the shirt.
Thhey usually wore togas and golden armbands. They usually were naked though.