I don’t know what to tell you, the questions are quite self explanatory:
Q3: They ask you to create a function that take the numerator and denominator and return a String (text) that represent the rational number. So if your numerator is 3 and denominator is 4 then it should return “3/4”
Q7: You need to compare your rational number against other rational numbers and integers. For example let’s imagine your rational number is 3/4 then myRationalNumber.inf(1) would return true because 3/4 is indeed lower than 1
Q10: You simply need to print in the console to result of the Leibniz formula using your toString() and val() functions