what does the below math rebus puzzle mean?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

What does the below mathematical rebus mean?

Can you find the 09 errors in the picture below?

What has many teeth, but cannot bite?

Find the hidden panda in the image below.

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?