What does this mathematical rebus means ?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

What is the fastest way to double your money?

Which digit occurred maximum times between the number 1 and 1000?

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

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

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Can you find the mistake in the below statement?

Solve the equation in the image by looking at the pattern closely.

A journalist was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then the journalist head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer.

What statement did the journalist make to survive?