P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?
Which wheel of car does not rotate when you turn your car right?
Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.
Who are these two masked girls?
What is the next number in this series?
4,12,84,3612....
Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.
Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'
To this, the man who was wearing the Green shirt said. 'Wow, thats right.'
Can you identify who is wearing which colour shirt ?
You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?
A woman shoots her husband.
Then she holds him under water for over 5 minutes.
Finally, she hangs him.
But 5 minutes later they both go out together and enjoy a wonderful dinner together.
How can this be?
John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.
How can the John reach the main gate?
Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.
There are cliffs around the island, so he cannot jump off.
How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)
Can you find a rabbit in the given picture?
In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.