There was a strange boy who was born before his father. How can this be possible?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Why is 6 afraid of 7?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

Which is faster, Heat or Cold ? Explain.

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?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?