An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Which English verb becomes past tense just by rearranging the letters?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Using Only Five 5's and any mathematical operator make sum as 37

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

Count the number of balls in picture below: