How many times in a given day, minutes and hour clock comes in a straight line ?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Mother's Name is Mrs. SIXTY TWO
Son's Name is FIFTY TWO
Daughter's Name is FORTY TWO
What is Name of Father?

Count the number of lines in the image below ?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

You can see it everyday, But cannot touch it at will. What is it?

What demands an answer, but asks no questions

Count the number of balls in picture below:

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?