A father's child, a mother's child, yet no one's son.

Who am I?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

Why do you find that most of the buildings are deprived of the 13th floor?

Can you make a six-letter word using the letters N, A and B ?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

If you say my name, I will no longer exist. What am I?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

What is both possible and impossible at the same time?