general/wagering
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Bar bet
Wager, often trivial, made between people in a social setting such as a bar
Matched betting
Betting technique
Proposition bet
Bet on an event not directly affecting a game's final outcome
Over–under
Type of wager at a sportsbook
Tote betting
Betting organization
Teaser (gambling)
Type of gambling bet
Each-way
Type of wager offered by bookmakers