The centre of the third figure is empty. What digit should fit inside?

Count the number of balls in picture below:

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

What am I?

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

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Name a key which is hardest to turn.

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?