I can write cow in 13 letters.

Can You?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

The more it dries, the wetter it becomes. Can you tell what it is?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

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

Can you start the fire using two pieces of wood?

Which number should replace the question mark?