# Task 6. Logic

Text of the problem. Sigmund, Asema, Marina, and Sasha received an invitation to Career Days at their university. Due to conference week, they had little time, so on that day each could have detailed discussions with only one company. Two students went to meet with Eastern Gas, one with Transgas Space Systems, and another with Siberia Oil Refining. Due to their temperaments, Sigmund and Marina would never have shown interest in the same company. Moreover, on that day, the interests of Sigmund and Sasha, Marina and Sasha, Sasha and Asema, as well as Sigmund and Asema diverged. Additionally, Sigmund immediately refused to meet with Transgas Space Systems. It is necessary to determine which companies are the most preferred for employment by each student.
Solution to the problem. This problem can be solved by comparing the facts in the table. Let's mark the number of students who attended the meeting with each company. Then exclude for Sizigmund the meeting with Transgas Space Systems. By comparing the combinations, we establish that Asema and Marina attended the meeting with Eastern Gas. This means that Sasha met with Transgas Space Systems, and Sizigmund with Siberian Oil Refining.

| Company | Sizigmund | Asema | Marina | Sasha |
| :---: | :---: | :---: | :---: | :---: |
| Eastern Gas (2) |  | + | + |  |
| Transgas Space Systems (1) | - |  |  | + |
| Siberian Oil Refining (1) | + |  |  |  |