Answer: 1.01001000100001.
Step-by-step explanation: Rational numbers repeat but can terminate or they are just simply whole numbers. Irrational numbers are numbers that can't terminate such as π and √2. √100 is 10, so that's a rational number. 1/6 is equivalent to 0.166666667, and that can be terminated, so 4 1/6 is a rational number. 1.2525252525 is also rational. 1.01001000100001 cannot be terminated, so it's irrational.
Hope this helps! :)