Logic Puzzle Quiz
Ten brain teasers drawn from a bank of 20: number sequences, syllogisms, analogies and questions with a tempting wrong answer. Each answer is explained at the end
Ready for 10 puzzles?
Each round draws 10 of 20 puzzles in random order. There is no timer, so read carefully: several questions have a fast answer that is wrong.
A game for fun and practice. It does not measure intelligence and gives no IQ score.
Your Answers, Explained
Start and complete the quiz to generate your results
How to use this tool
- Press Start the quiz. There is no countdown, so take your time.
- Answer the 10 puzzles one at a time; the progress bar shows where you are.
- Read your score and tier, then scroll through the review: each puzzle shows your answer, the correct one and why.
- Play another round to get a new draw from the bank of 20.
Worked example
A score of 10/10 is “Sharp Mind,” 7 to 9 is “Quick Thinker,” 4 to 6 is “Solid Reasoning” and 0 to 3 is “Warming Up.” Take the sequence 3, 7, 15, 31: the gaps are 4, 8, 16, which double each time, so the next gap is 32 and the answer is 63 (or: each number is double the previous plus 1). In the review you see that step for every puzzle you answered.
Methodology
Each round draws 10 puzzles at random from a bank of 20 and shuffles the answer options. One point per correct answer; the score places you in one of four playful tiers and is never turned into an IQ number.
Five habits that cost points
- Taking the first answer that feels right. The bat and ball, the five machines and the lily pads all list their tempting wrong answer. There is no timer, so reread before you click.
- Checking only the differences in a sequence. For 2, 6, 18, 54 the gaps look random until you test the ratio (always 3).
- Taking a percentage back from the wrong base. Up 20% and down 20% does not return to the start: 100 becomes 120 and then 96.
- Reading “some” as “all”. If some cats are black, only those cats inherit what is true of black things.
- Expecting an undo. A click records your answer and moves on. The review at the end shows what you chose.
Keep Your Brain Active
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Frequently asked questions
Is this an IQ test? ▼
No. It is a puzzle game. Ten questions cannot be validated or normed against a population, so the score is never turned into an IQ number. Standardized intelligence tests are given by trained professionals.
Why do I get different questions each time? ▼
Each round draws 10 puzzles at random from a bank of 20 and shuffles the answer options, so a second round is a new mix rather than the same quiz from memory.
Why is the lily pad answer 47 days and not 24? ▼
The patch doubles every day. If it covers the whole lake on day 48, it covered half of it one day earlier, on day 47. Halving the time would only work if it grew by the same amount each day.
Why does the ball cost 5 cents and not 10? ▼
If the ball cost 10 cents, the bat would cost 1.10 and the total would be 1.20. With the ball at x, the bat is x + 1.00, so 2x + 1.00 = 1.10 and x = 0.05.
Does a low score mean I am not clever? ▼
No. A short quiz depends on attention, mood and familiarity with this kind of puzzle. Read the explanations, play another round and treat it as practice.