From the reviews‎:‎ ‎"‎The volume contains 1007 problems in ‎(‎mostly combinatorial‎)‎ set theory‎.‎ As indicated by the authors‎,‎ ‎"‎most of classical set theory is covered‎,‎ classical in the sense that independence methods are not used‎,‎ but classical also in the sense that most results come from the period‎,‎ say‎,‎ 1920‎-‎-1970‎.‎ Many problems are also related to other fields of mathematics such as algebra‎,‎ combinatorics‎,‎ topology and real analysis‎.‎‎"‎ And indeed the topics covered include applications of Zorn‎'‎s lemma‎,‎ Euclidean spaces‎,‎ Hamel bases‎,‎ the Banach‎-Tarski paradox and the measure problem‎.‎ The statement of the problems‎,‎ which are distributed among 31 chapters‎,‎ takes 132 pages‎,‎ and the ‎(‎fairly detailed‎)‎ solutions ‎(‎together with some references‎)‎ another 357 pages‎.‎ Some problems are elementary but most of them are challenging‎.‎ For example‎,‎ in Chapter 29 the reader is asked in Problem 1 to show that $[\lambda]^{