Difficult puzzles, brain teasers and conundrums

Puzzles, riddles, brain teasers, conundrums, logic questions in pictures. All the logic questions here are more difficult than the average in other sections of the site. You will most likely need more time to complete them than usual. But you can look at the answers and explanations for all these logic riddles, brain teasers and conundrums. To check your answer, click on the «Answer» button located below the task. After this, the correct answer and explanations will appear. Below you can select other questions on this topic. Typically each topic has 20 questions or more. At the same time, the complexity of logical problems gradually increases. First there will be easy questions, then medium, then difficult. Try to complete tasks as quickly as possible.

Question - 13

This logic problem has images in the form of grouped outline circles, ellipses, and dots. In the top line, all images are arranged according to a certain rule. On the bottom line the rule is almost the same. You need to select the image in the bottom line that does not match the general rule for the bottom line.

Answer

Correct answer = 1.

Here, in each image, the number of intersections of points and areas in the form of circles or ellipses is counted. In the top line, the number of intersections is: 2, 3, 4, 5, 6. In the bottom line, the number of intersections is: 2, 4, 5, 6, 7. Therefore, we can conclude that in the bottom line, image number 1 does not correspond to the general sequences for this line. There should be 3 intersections in this image, not 2.

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20

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