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?

What question can you never answer yes to?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

I am the fastest animal but cannot climb the tree. What am I?

Who can jump higher than a Mountain?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?