What is the difference between a rational or irrational number?: A rational number either Terminates or Repeats.

Is zero a rational number?: Well  zero does not repeat but it does terminate (It stops), so yes zero is a rational number.

Is 1.2345678910111213141516171819202122232425….a rational number? Explain using the definition of a rational number in decimal form.: That number does not terminate or stop so therefore it is an irrational number.