Can you replace the question mark with the correct number?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

What breaks yet never falls, and what falls yet never breaks?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Solve the following series:
AZ, GT, MN, __, YB

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?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?