Solution:

Smiles (there is a mile between the two S's)

Solution:

None

The sum of numbers from 0-9(0,1,2,3,4,5,6,7,8,9) is 45 and therefore can be divisible by 3 and 9.

Solution:

All numbers(0-9) appears in alphabetical order and once.

Solution:

Go.

Solution:

Turn the grid upside down. Circle the numbers 1, 9, 1, 1 When you flip it upside down the 6 becomes 9

Solution:

Concrete floors are very hard to crack

Solution:

Move the 6 up just a little bit.
2pow(6) -63 =1

Solution:

Silence

Solution:

F

Explanation: The letters are the first letter of each of the twelve months. The second month is February.

Solution:

fsh

no eye => no i
=> fish -i
=> fsh

lolz