Unsolved IQ Questions

These unsolved IQ questions are still waiting for an official answer. Work out the rule and contribute your explanation to help the community.

94 questions

IQ Questions

Classic Missing Number Puzzle
Logical ReasoningMediumUnanswered
Classic Missing Number Puzzle
Table Puzzle: Find the Number in the Empty Cell
Logical ReasoningHardUnanswered
Table Puzzle: Find the Number in the Empty Cell
Find the Missing Number in the Sequence
Logical ReasoningMediumUnanswered
Find the Missing Number in the Sequence
Fill in the Missing Numbers on the Poster
Pattern RecognitionEasyUnanswered
Fill in the Missing Numbers on the Poster
Doubling Sequence Puzzle: Replace the Question Marks
Pattern RecognitionHardUnanswered
Doubling Sequence Puzzle: Replace the Question Marks
Circular Wheel Number Puzzle: What Number Is Missing?
Spatial ReasoningMediumUnanswered
Circular Wheel Number Puzzle: What Number Is Missing?
Number Grid: Which Number Is Missing?
Logical ReasoningEasyUnanswered
Number Grid: Which Number Is Missing?
Missing Number Puzzle: Can You Solve It?
Logical ReasoningMediumUnanswered
Missing Number Puzzle: Can You Solve It?
Whiteboard Puzzle: What Are the Missing Numbers?
Logical ReasoningHardUnanswered
Whiteboard Puzzle: What Are the Missing Numbers?
Viral Number Grid Puzzle: 90 Percent Get It Wrong
Logical ReasoningHardUnanswered
Viral Number Grid Puzzle: 90 Percent Get It Wrong
Multi-Row Table: Find Every Missing Number
Logical ReasoningHardUnanswered
Multi-Row Table: Find Every Missing Number
Viral Missing Number Puzzle: Solve It and Share
Logical ReasoningMediumUnanswered
Viral Missing Number Puzzle: Solve It and Share
Row Sum Puzzle: Find the Missing Number in Each Row
Logical ReasoningMediumUnanswered
Row Sum Puzzle: Find the Missing Number in Each Row
Segment Puzzle: Which Number Fills the Empty Segment?
Pattern RecognitionMediumUnanswered
Segment Puzzle: Which Number Fills the Empty Segment?
Three Triangles Number Puzzle: Find the Missing Number
Logical ReasoningMediumUnanswered
Three Triangles Number Puzzle: Find the Missing Number
What Is Missing From the Number Line?
Logical ReasoningEasyUnanswered
What Is Missing From the Number Line?
Four Squares with One Number in the Middle: Find It
Logical ReasoningMediumUnanswered
Four Squares with One Number in the Middle: Find It
Maths Puzzle: If 2+3=10, What Does 5+6 Equal?
Logical ReasoningHardUnanswered
Maths Puzzle: If 2+3=10, What Does 5+6 Equal?
Number Pattern in Two Groups: Find the Rule
Pattern RecognitionHardUnanswered
Number Pattern in Two Groups: Find the Rule
Sudoku-Style Number Puzzle: Fill the Grid
Logical ReasoningHardUnanswered
Sudoku-Style Number Puzzle: Fill the Grid
Green Square Puzzle: Find the Missing Number
Logical ReasoningMediumUnanswered
Green Square Puzzle: Find the Missing Number
Number Chain Puzzle: Find the Missing Link
Logical ReasoningMediumUnanswered
Number Chain Puzzle: Find the Missing Link
What Am I? I Have a Hat But No Head
Verbal ReasoningMediumUnanswered
What Am I? I Have a Hat But No Head
Look at the Office Scene: Who Is the Boss?
Logical ReasoningEasyUnanswered
Look at the Office Scene: Who Is the Boss?

Help Us Solve These IQ Questions

These questions are waiting for an official answer. Each one has been verified as a legitimate IQ-style puzzle, but our editorial team has not yet published a step-by-step solution. This is your opportunity to contribute, study the question, work out the reasoning, and submit your explanation to help other learners.

Community-submitted solutions are reviewed by our editorial team. High-quality explanations that correctly identify the underlying rule and clearly walk through the logic are published as official answers and credited to the contributor.

How to Submit a Solution

Study the Question

Look carefully at the image. Identify what type of question it is, a number grid, a shape sequence, a spatial count, and recall the reasoning strategies that apply to that category.

Find the Rule

Every IQ question has exactly one consistent rule that produces the correct answer. Test your hypothesis against all given elements before committing. If one piece doesn't fit, the rule is wrong, refine it.

Write a Clear Explanation

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Submit for Review

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Frequently Asked Questions

What happens after I submit a solution?

Your submission is queued for editorial review. If approved, it is published as the official answer on the question page. You will be credited by name if you provided one in your submission.

Can I submit a solution if I'm not certain of the answer?

You can submit your best attempt, but explain your reasoning clearly. Submissions that show sound reasoning, even if the final answer is debated, are more useful than bare answers without explanation.

Are there rewards for contributing solutions?

Contributing solutions is currently voluntary. Credit is given by name on the published explanation. We may introduce contributor recognition features in the future.

How long does review take?

Most submissions are reviewed within a few days. High-quality explanations for questions with multiple competing submissions may take longer as we evaluate and reconcile different approaches.