What work can one never finish?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

What is the riddle which can be asked all day with a different correct answer each time.

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Can you move 2 matchsticks to form four equal sized squares.

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

What does this rebus puzzle means ?

Complete the table series riddle by finding the number that can replace "??".