When can we add 2 to 11 and get 1 as the correct answer?

Solve below rebus puzzle?

I have feet, but no legs. Which animal Am I?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

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

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

There are 100 bulbs in a room. 100 strangers have been accumulated in the adjacent room. The first one goes and lights up every bulb. The second one goes and switches off all the even-numbered bulbs - second, fourth, sixth... and so on. The third one goes and reverses the current position of every third bulb (third, sixth, ninth? and so on.) i.e. if the bulb is lit, he switches it off and if the bulb is off, he switches it on. All the 100 strangers progress similarly.

After the last person has done what he wanted, which bulbs will be lit and which ones will be switched off?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?