Can you name some countries which do not have the alphabet 'A' in them?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

What goes through cities and fields, but never moves?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What number should come in place of the question mark below?

Name a key which is hardest to turn.