who is silent in the parliament?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Which alphabet is a part of our body?

There are forty elephants and they have forty-fore heads. How can this be possible?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

Which alphabet letter is a question?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?