What kind of tree can you carry in your hand?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

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?

If six children and two dogs were under an umbrella, how come none of them got wet?

You need to arrange three 7 and mathematical symbols to form number 1?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

What is the centre of gravity?