Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

What is common among 11, 69, and 88?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you find the key in the picture below?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

How can you make a TV, a bed, a dog, and a car liquid?