If six children and two dogs were under an umbrella, how come none of them got wet?

What have one eye but still cannot see?

Considering the below equation:

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

Then, I + II + III = ?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

1. How can we put an elephant in the refrigerator?
2. How can we put a Giraffe in a refrigerator?
3. The king of the jungle invites all the animals to a party everyone comes except for one animal, which animal?
4. You come to a crocodile-infested lake, you can't go around it, you can't co under it and you can't go over it, how do you get across?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10