Find the value of "?" in the ball picture Riddle below:

A bomb exploded in a room full of married couples and no one died. How?

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

What do you call a fish without an eye?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

Replace the question mark in the picture below.

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Complete the table series riddle by finding the number that can replace "??".

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?