I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

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

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?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

If 1+9+8=1, what is 2+8+9?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

A man fell off a smuggling boat into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the boat to realize someone was missing. The missing man was rescued two hours later on the return trip. Why didn't he drown? Note:- He didn't know swimming, the sea was deep, and He wasn't holding anything

10+10 and 11+11 can give you the same answer.

Explain how?