Before Mount Everest was discovered, what was the highest mountain in the world?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

What has hands, but can’t clap?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

Decode below rebus
D
N
A
T
S , D