When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

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?

Can you identify if it's a murder or a suicide ?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

During which month do people sleep the least?

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?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

What came first, the chicken or the egg?