A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Can you find out the missing number in the grid?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

If 1+9+8=1, what is 2+8+9?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.