I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

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?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

What occurs twice in a week, once in a year but never in a day?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

What's the only room from which no one can enter or leave