In Problems 49 - 52, compute the odds in favor of obtaining
49. A head in a single toss of a coin
50. A number divisible by 3 in a single roll of a die
51. At least 1 head when a single coin is tossed 3 times
52. 1 head when a single coin is tossed twice
In Problems 53 - 56, compute the odds against obtaining
53. A number greater than 4 in a single roll of a die
54. 2 heads when a single coin is tossed twice
55. A 3 or an even number in a single roll of a die