This is a book of 2 halves.
The first half deals poorly with the maths.
The second half (page 109) onwards is a guide to the odds and probabilities of a variety of gambling games
Eg: dice, slot machines, roulette, baccarat, blackjack, a variety of poker types, lottery and sport bets.
If your interest is an introduction to the maths of the subject this should not be the first book you read.
If you want a guide to the probability of throwing a double with two dice or a total of 7, or the odds of getting a pair of queens from 5 cards (2nd half of the book) this may well be the book for you.
cheers