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

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

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?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

How can one talk without saying a single word?

There is something which you can be arrested for attempting but not for successfully completing.