Well, if the third question is independent and has nothing to do with the second question, the third question gets full marks. When we say independence, we should actually say that the second question is independence. Adding a condition "if" before the second question is a new condition added to the original question. Generally, if you don't need the third question, you can get a point for the third question.

If the second question is a verification question, if the third question is used, the third question is guaranteed to be good, with full marks (points may be deducted).

The landlord couldn't answer the second question, so the third question came out. It should be that these two issues are independent. Generally speaking, time-sharing will not be deducted.