How many activities did you have on Monday?

1. I had three activities on Monday.
2. I did three activities on Monday.

(Are both answers correct? ....Thank you for your help. With your help, I can solve a lot of problems.....Have a good time.)

Both answers are correct.

Yes, both answers are correct and convey the same meaning. In both sentences, it is mentioned that there were three activities on Monday. The choice between using "had" and "did" depends on personal preference and context. Some people might say "had" to indicate possession or existence of activities, while others might say "did" to indicate the action of performing the activities. Both ways are commonly understood and acceptable. Thank you for your kind words! I'm glad I could help. Have a great day!