Free IQ Test 2026 October
Prepare for the Free IQ certification. Practice questions with answer explanations covering all exam domains. 🎓
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Our free Wechsler IQ test practice covers the verbal comprehension, perceptual reasoning, working memory, and processing speed subtests used in WAIS-IV and WISC-V assessments.
Candidates applying to Mensa membership can benchmark their score with our free Mensa IQ practice test — covering spatial reasoning, numerical sequences, and verbal analogies.
Parents and educators can understand the Wechsler Preschool and Primary Scale of Intelligence with our WPPSI preschool IQ test practice — covering verbal comprehension, visual spatial, and fluid reasoning subtests.
Candidates preparing for foundational professional assessments often also study with the PI Cognitive Assessment 2026, which measures the numerical, verbal, and abstract reasoning skills evaluated in many entry-level professional tests.
Sample Mensa Practice Questions
Try these questions from our free Mensa practice tests. The correct answer and an explanation follow each question.
Which does NOT belong? Violin, Cello, Piano, Harp, Guitar
- A. A. Violin
- B. B. Piano
- C. C. Harp
- D. D. Guitar
Answer: B. B. Piano
Violin, Cello, Harp, and Guitar are all string instruments played by plucking or bowing strings directly. Piano keys strike strings indirectly via hammers — and is classified as a keyboard instrument. Piano is the odd one out.
How many edges does a regular tetrahedron have?
- A. A. 4
- B. B. 5
- C. C. 6
- D. D. 8
Answer: C. C. 6
A regular tetrahedron has 4 triangular faces, 4 vertices, and 6 edges. Euler's formula: V-E+F = 4-6+4 = 2 ✓
Looking at a 4×4 grid from above, a ball starts at the top-left corner (row 1, col 1) and moves 2 squares right, then 3 squares down, then 1 square left. What is the ball's final position?
- A. Row 4, Column 2
- B. Row 3, Column 2
- C. Row 4, Column 3
- D. Row 3, Column 3
Answer: A. Row 4, Column 2
Starting at (row 1, col 1): right 2 → col 3; down 3 → row 4; left 1 → col 2, giving row 4, column 2.
An object casts a square shadow from above, a triangular shadow from the side, and a circular shadow from the front. What shape could the object be?
- A. A cylinder
- B. A cone with a square base
- C. A sphere
- D. A cube
Answer: B. A cone with a square base
A square-based cone viewed from above is square, from the side is triangular, and from the front (tilted) can appear circular.
About the Author
Educational Psychologist & Academic Test Preparation Expert
Columbia University Teachers CollegeDr. Lisa Patel holds a Doctorate in Education from Columbia University Teachers College and has spent 17 years researching standardized test design and academic assessment. She has developed preparation programs for SAT, ACT, GRE, LSAT, UCAT, and numerous professional licensing exams, helping students of all backgrounds achieve their target scores.