Puzzles to sharp your brain

Puzzle 1
If in a bag, six red color socks and six white color socks are present. How many minimum number of socks should be taken out from the bag without noticing its color, so that a pair is received.

Puzzle 2
If a senior officer after reaching the top of the staircase, asks you how many stairs have you climbed? If you are following your officer, then what should be your answer?

Puzzle 3
If you are given a piece of paper and asked to capture air in it, how will you do it?