Solving problems is important in understanding concepts. In these problem sets; questions are designed at different levels of the Revised Bloom's Taxonomy (according to NEP 2020 and other good practices), and this stratification is important in activating the different capabilities of students in problem solving.
Logistics
While submission of all problem sets is not mandatory, it is recommended. One can find below the module-wise problem sets, and their submission links.
PS 2.1
PS 2.2
PS 4.1