Which tank will fill first?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

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?

There was a strange boy who was born before his father. How can this be possible?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Which is the rope you never skip with?

Why is 6 afraid of 7?