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

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

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

A Monkey, a squirrel, and an Eagle are racing to the top of the mango tree. Assuming all these animals are in perfect shape, Which animal will reach to Banana first?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

Which is the correct shadow of the bird?

What does a man do only once in his lifetime, but women do once a year after they are 29?