A man dies of old age on his 25 birthday. How is this possible?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

what does the below math rebus puzzle mean?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

What has hands, but can’t clap?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

Can you fill the blank with the correct number?

6 30 870 756030 _____

By using 'because' continuously three times, can you make an English statement ?