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?

Can you solve below mathematical equation?

2^1234 - 2^1233

Why did Buffon take the goal with him after every Juventus match?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

When it's bad luck to meet a black cat?

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 ?

Why Wine Glass Stem is so long?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____