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

Can you place six X (crosses) in below board without making three in a row in any way ?

What jumps when it walks and sits when it stands?

What has one letter and starts with an E?

Can you find a five letter word that is left with only two letters if one is removed?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

I always drive my customer away.

Who am I?