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  1. 12 Logic Puzzles That Will Test Your Smarts - Reader's Digest

  2. 25 Logic Puzzles (with Answers) for Adults - Parade

  3. 27 Hard Riddles to Test Your Smarts with Answers - Reader's Digest

  4. 50 Lateral-Thinking Puzzles (with Answers) to Challenge Yourself

  5. 101 Brain Teasers for Adults (with Answers) - Parade

  6. Logic Puzzles - Aha! Puzzles

  7. Brain Teasers and Puzzles - Student Handouts

  8. 20 Hard Riddles for Adults: Best Brain Teasers for Adults

  9. 30 Thought-Provoking Math Puzzles for Middle Schoolers

  10. 118 Clever Riddles for High School Students (Plus Answers)