Test Your Logic 50 Puzzles in Deductive Reasoning G. Summers Dover Publications Test Your Logic: 50 Puzzles in Deductive Reasoning by George J. Summers. This vintage paperback collection offers a variety of brain teasers and logical challenges ranging in difficulty from simple to complex. Keywords: Vintage, Logic Puzzles, Deductive Reasoning, Brain Teasers, George J Summers, Dover Publications, Mathematics, Educational, Problem Solving, 1970s, Retro, Paperback, STEM, Analytical Thinking, Mind Games Condition: This book is in fair condition with visible shelf wear, creasing on the cover, and edge wear as shown in photos. Interior pages remain intact and readable. Inv.# B233xB8 Reasonable offers welcome. Ships within 1 business day from Good Clucking Threads (business days are Monday–Friday, excluding postal holidays). While we inspect carefully, minor human errors can occur — photos show the exact item. Questions? Happy to help. #Mindgames #Puzzles