Eight of us go fourth, not back, to protect our king from an attack. What are we?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What's the only room from which no one can enter or leave

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?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

I travel all around the world but always stay in the corner. What am I?

What seven-letter word has hundreds of letters in it?

Can you solve below mathematical equation?

2^1234 - 2^1233

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see