Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

I shave every day, but my beard stays the same. What am I?

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

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Whats the next number in the below number sequence pattern.

Can you find the missing piece of the Porsche?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)