**QUESTIONS**

**1. Is there a ring homomorphism from R[[X]] onto R[X] ?
(2020).**

**2. A 2x3 association analogue
(2021).**

**3. A 3x3 zero-square matrix which has not rank 1
(2021).**

**4. A special solution to a linear Diophantine
equation with 4 variables
(2022).**

**5. Regular UU rings are reduced
(2022).**