Why is 6 afraid of 7?

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?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Can you name an animal whose killing cannot be performed without spilling your own blood?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

What kind of tree can you carry in your hand?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

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 ?

who is silent in the parliament?

What is the next number in this series?

4,12,84,3612....