People make me, save me, change me, raise me. What am I?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

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

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

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

I look at you, you look at me I raise my right, you raise your left. What am I?