What does this simple rebus mean?

Can you find out the total number of triangles in the given figure?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

I always drive my customer away.

Who am I?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

What does the below rebus riddle means?

Replace the question mark with the correct number.

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?