What goes up but never comes down?

There is something which you can be arrested for attempting but not for successfully completing.

Can you decipher the two rows to find the hidden word?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

You need to remove four matchsticks from the picture below and still need to maintain the following as in the original image.
1. 1st row contains 12 matchsticks
2. 2nd row contains 12 matchsticks
3. 1st column contains 12 matchsticks
4. 2nd column contains 12 matchsticks

What seven-letter word has hundreds of letters in it?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?