Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

When it's bad luck to meet a black cat?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

What has one eye, but can’t see?

Before Mount Everest was discovered, what was the highest mountain in the world?

Can you start the fire using two pieces of wood?

Can you find out the total number of triangles in the given figure?

What has no start, end, or centre?