Riddles with matrices

Puzzles, riddles, brain teasers, conundrums, logic questions in pictures. Here all tasks are presented in the form of various matrices. Most often these are rectangular matrices that have external rows and columns. In these logic puzzles, brain teasers and conundrums, the columns and rows affect the contents of the matrices. 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 - 10
In this puzzle, each geometric object has a numerical value. The numbers on the right and above indicate the sum of the values ​​of objects in a row or column. Find the correct option in place of the question mark.
Correct answer = 19.
The sequence of calculations is shown below. Although you can come up with your own version of the calculation sequence. If you look at the left column, it will be obvious that there is only one option: the circle is equal to 1, and the second object is equal to 2. In the first row, it is now clear that the triangle is equal to 3. If you look at the second column, it is obvious that the blue X is equal to 4. If you look at the third column, it is obvious that the asterisk is equal to 7. As a result, the bottom row is equal to 1+4+7+7=19.
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