What brings you down but never up?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

What word is pronounced the same if you take away four of its five letters?

What do you call a fish without an eye?

Solve the equation in the image by looking at the pattern closely.

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

What shoe company does this rebus represent?