IQ and logic quizzes

These quizzes don't test what you know — they test how you think. Number sequences, deductions, analogies and odd-one-out puzzles all reward careful reasoning rather than memory.

Each quiz explains the logic behind every answer, so you can see exactly where a line of reasoning worked or went wrong. They're a fun way to practise the kind of thinking used in aptitude tests and everyday problem-solving.

They are for entertainment and practice, not a formal IQ assessment.