Take away the whole and some still remain. What is it?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

What word is pronounced the same if you take away four of its five letters?

What do you call a fish without an eye?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

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 1729 is a magic number? Answer Logically.

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?