Calsoft Labs Interview Question

Three friends, Peeta, Eugene and Harry plans to visit an art exhibition of Leonardo Da Vinci. While going to the exhibition Peeta says that Leonardo has at least four paintings of Rembrandt. Eugene denies with his statement and tells that he has less than four paintings of Rembrandt. Harry says that he does not know exactly too but he knows that there is at least one Rembrandt by Leonardo.

Now only one of the three friends is correct. Knowing the fact, how many Rembrandt does Leonardo has?

Yahoo Interview Question

Once in a prison with 100 prisoners, the Warden introduces a strange but interesting challenge to all the prisoners. This challenge can even grant them the freedom and thus every one of the prisoners becomes quite excited.

The warden selects one prisoner everyday randomly from the lot and moves him into a pitch black room with a bulb and a witch that controls the bulb. The prisoner can carry out three different actions in the room - He can switch on the bulb, switch it off or do nothing and sit idle. A prisoner can be picked up more than one time.

Now the warden introduces the twist in the challenge. He tells them that the prisoners can put a stop to the process any day they feel that every one of them has been confined to that room at least once. If the prisoners are correct, then every single one of them will be set free. But if they have put up a wrong judgment, all of them will be killed.

Seeking it to be the only chance of freedom, the prisoners take up the challenge. They are given some time to discuss regarding it before the process could begin. How will they plan things so that they are finally set free?

Intel Interview Question

In a party, there are five people and a whole round cake lying at the center of table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table.

How can they make sure that everyone gets a 1/5th of piece?

Infogain Interview Question

This is a famous probability puzzle in which you have to choose the correct answer at random from the four options below.

Can you tell us whats the probability of choosing correct answer in this random manner.

1) 1/4
2) 1/2
3) 1
4) 1/4