What does this Rebus Picture mean?

Forwards I am heavy, backward I am not. What am I?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Can you find the 09 errors in the picture below?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What has a bottom at the top?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?