Here is a mathematical expression that also secretly tells a movie name. What movie is that?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

Why do Chinese men eat more rice than Japanese men do ?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

Decode below rebus
D
N
A
T
S , D

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

Which city is three-fifths chick two third cat and 50% goat?

Can you tell a 3D object that has just two surfaces?