What number do you get when you multiply all of the numbers on a telephone's number pad?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

What is the word or phrase?

I can be cracked, made, told, and played. What am I?

What can go up a chimney down, but can’t go down a chimney up?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

What does this mean?

CCCCCCC

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?