What is 3/7 chicken, 2/3 cat and 2/4 goat?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Can you solve below mathematical equation?

2^1234 - 2^1233

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

What's the only room from which no one can enter or leave

What does below chemistry rebus means?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?