I wrote mine as a code in python, to be Frank my code is not professional
i`m still working on that import math
Parameter = 1
RandomNumber = 3
EulerNumber = 2.71828
Probability = (Parameter ** RandomNumber ) * (EulerNumber ** (-Parameter)) / math.factorial(3)
RoundedProbability = round(Probability, 4)
Inpercentage = str(RoundedProbability * 100)
print ('The chance of having exactly three blocks mined within the next 10 minutes = ',
RoundedProbability, 'or', Inpercentage + '%')