Can you make a six-letter word using the letters N, A and B ?

10+10 and 11+11 can give you the same answer.

Explain how?

I know a nine-letter word having only one vowel.
Do you ?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?