A gambler plays roulette 100 times, betting a dollar on a column each time. The bet pays 2 to 1, and there are 12 chances in 38 to win. Fill in the blanks; show work.
a) In 100 plays, the gambler’s net gain will be around _____, give or take ______ or so.
b) In 100 plays, the gambler should win _____ times, give or take _____ or so.
c) How does the column bet compare with betting on a single number at Keno?