Can you write down eight eights so that they add up to one thousand?

If an electric train is travelling south, then which way is the smoke going?

Can you make a fire with just a single stick?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

Move three sticks of the spiral below to form a square.

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

Can you replace the question mark with the correct number?