Solve the mathematical equation in the picture below.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Which city is three-fifths chick two third cat and 50% goat?

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Complete the missing letters of the given word.

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

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

A sundial has the fewest moving parts of any timepiece. Which has the most?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?