Mental nuts, can you crack em?
Subtitle: a book of 100 catch or trick problems: their simplicity invites attack, while their cunningly contrived relations call forth our best thought and reasoning
Edition: Rev. 1904 ed.
Publisher: S. E. Clark
Published: 1904
Place of publication: Philadelphia
Language: eng
Number of pages: 32
Copyright date: 1897
Subjects: Mathematical recreations; Magic squares
Notes: "Copyright 1897."