Rearrange the letters in "new door" to make one word.

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

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

What building has the most stories?

Count the number of squares in the picture below.

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

Why Aeroplane windows are round?

Can you place six X (crosses) in below board without making three in a row in any way ?

You can hear me, but you can't touch or see me.

What am I?