What does does this rebus picture means ?

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.

Can you count the number of blocks in the picture below?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

How many sides does a circle have?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

What four weights can be used to balance from 1 to 30 pounds?

Prove that twice of ten is the same as twice of eleven.

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain