Can you place three balls such that the equation shown in the picture holds true?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Can you count the number of matches in the picture below ?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Count the number of lines in the image below ?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

A man dies of old age on his 25 birthday. How is this possible?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C