[Probability of randomly choose r correct answers out of n total questions] #python #teaching

prob_choose_r_randomly_from_n_questions.py

import math

n = 33  # number of questions
r = 6  # number of correct answers

probs = []



for r in range(n):
  	prob_specific_case = ((1/5)** r * (4/5)** (n-r))
    num_comb = math.factorial(n) / (math.factorial(r) * math.factorial(n-r)) * prob_each_case
    prob_case = num_comb * prob_specific_case
    probs.append(prob)