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?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilt some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?

Replace the question mark with the correct number.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. 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?

In the picture given below, can you find out which digit will take place of the question mark?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

By what process could you make a 'Tea-Table' into food?

What is the next number in the series?

15 29 56 108 208 ?