Which number should replace the question mark?

Solve this riddle by finding the odd one out from the rest.

What is common among 11, 69, and 88?

'Ferrari driver' easily beats the 'force driver' in a two-car race. How did Indian newspapers truthfully report so to look as a 'force drive' had outdone the 'Ferrari driver'? Think!!!

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

What is the last thing you take off before bed?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

I always drive my customer away.

Who am I?