It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What has one letter and starts with an E?

A man dies of old age on his 25 birthday. How is this possible?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

What has many teeth, but cannot bite?

What is the largest number you can write with just 3 digits?

Which alphabet letter is a question?