Puzzle - 5

Last time I had asked the following puzzle

A room has three switches. They are connected to three bulbs in another room. You are in the room with the switches and can put them on or off.  Then you go to another room where bulbs are. You cannot come back to the room that has switches.  How can you find out which switch relates to which bulb.

Its answer is easy. Put on the first switch for some time and then put it off then put on the second one and go to the room that has bulbs. The second switch is of the bulb that is lighted. Touch the remaining two bulbs: the one that is hot relates to first switch and the third switch is of the bulb that is neither heated nor lighted.

Last week I was invited to speak in a training programme for judges on Gender Justice. I was supposed to sensitise them with the issue. I had requested my friends to help me. Tanmay from Raipur had sent me this puzzle in this connection. I hope you will enjoy solving it.

A man and his met with a car accident. The father dies on the spot, but the son is rushed to hospital. The surgeon on duty says, ‘I can't operate on this boy, he is my son.’ How can this be?

 The answer does not strike you at once till you come across one about a pregnant girl and her father in the same situation and the gynaecologist (instead of surgeon) says the same thing