Science quiz
Number Venn diagram: 1 to 60
Three rules about numbers make three circles. Eight numbers arrive one at a time, one for every region, the outside included.
- Format
- Venn diagram
- Items
- 8 to place
- Limit
- 3:00
- Level
- Medium
- Checked
- 2026.10.03
- To place
- 8 number names, one for each region
- Diagrams
- 8, dealt in turn
- Time limit
- 3:00
- A miss
- Loses that one; the right region is shown
- Each circle is a rule, written out in full beside the diagram. Click the region where the named place belongs: inside one, two or all three circles, or outside them all.
- Every region holds exactly one of the eight, so a region that is used is out of the running.
- Keys: 1 to 8 pick the numbered regions, S skips to the next name and comes back later.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Click the region of the diagram where each number belongs. The diagram and its three rules appear when you start.
About this quiz
Each play deals one diagram and eight numbers, one for every region. Where a number sits is worked out from its factors and digits, so every placement can be checked with pencil and paper.
- There are 8 different diagrams, and every one has a number for all eight regions.
- 1 is neither prime nor composite, so it sits outside the prime circle.
- A wrong click loses that number and the game goes on.
More quizzes like this
| No. | Quiz | Section | Format | Items | Added |
|---|---|---|---|---|---|
| 01 | Number criteria: one number fits them all Odd, triangular and a multiple of 7? Each round lists two or three criteria, and exactly one number from 1 to 36 fits them all. Click it. Science / Pick the match / 12 to match | Science | Pick the match | 12 | 2026.10.03 |
| 02 | Prime or composite? Sort the numbers Is 91 prime? What about 97? Odd numbers from 11 to 99 appear one at a time, and you click prime or composite. Thirty numbers a round. Science / Sort into groups / 30 to sort | Science | Sort into groups | 30 | 2026.10.03 |
| 03 | Click only the square numbers Click every one of the square numbers from 1 to 100, and nothing else. There are 10 in the grid, and one wrong click ends the game. Science / Click the grid / 10 to click | Science | Click the grid | 10 | 2026.10.03 |