What does this rebus riddle means ?

Can you find the 09 errors in the picture below?

Name a key which is hardest to turn.

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Why are all black people so quick ?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

What 5-letter word typed in all capital letters can be read the same upside down?

Below rebus represent famous DiCaprio movie. Can you name it?