They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Which English verb becomes past tense just by rearranging the letters?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Who has married many women but was never married?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.