Find out the number of circles in the given picture having Illusion

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Why is 6 afraid of 7?

Can you solve this picture maths equation?

Below rebus represent famous DiCaprio movie. Can you name it?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

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?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?