Sir/Madam,
This is to bring it to your due attention that there are some errors in question no. 5 and ques no. 6 of the practice assignment.

here, Set Y does not contain 0 while it contains 2 twice
Here, options 3 and 4 are same and based on the concept both should be correct. So either there is a typo error in one of the options or an error in answer feeding.
I request you to please look into the matter
Hope for a response
Regards
Chaitanya