What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

What's a single-digit number with no value?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

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

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

Where do you go to learn how to make ice cream?

Replace the question mark with the correct number in the below-given picture?