Let there be $n$ people sitting at the table. Then on the second round, each took $n$ more seeds than on the first, and all together took $n \cdot n=n^{2}$ more seeds than on the first. Since $n^{2}=100$, then $n=10$.

## Answer

10 people.
Shapovalov A.V.

A bag of seeds was passed around the table. The first person took 1 seed, the second took 2, the third took 3, and so on: each subsequent person took one more seed than the previous one. It is known that in the second round, the total number of seeds taken was 100 more than in the first round. How many people were sitting at the table?