[ Arithmetic. Mental calculation, etc.]

In a row, 37 numbers are written such that the sum of any six consecutive numbers is 29. The first number is 5. What can the last number be?

#
The sum of the first 36 numbers is $6 \cdot 29$, the sum of the last 36 numbers is also $6 \cdot 29$. Therefore, the last number is equal to the first.

## Answer

5.