Which tank will fill first?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

What's the next in the series?

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

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

In the given picture, in how many ways can you read the word "Tiger"?

Using eight eights and addition only, can you make 1000?