Count the number of lines in the image below ?

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

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

What number when divided in half becomes zero?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Name a key which is hardest to turn.