**Python Puzzles**

You process a deck with 50 cards that has an unknown and random number of red and black cards. What is the probability of drawing a red card from the deck?

The probability is 50%.

import random import numpy as np # initialize an empty deck list and a counter for red cards deck = [] red = 0 size = 1_000_000 # generate a random number of red cards (0-51) for each iteration # calculate the percentage of red cards and append a binomial distribution (0=black, 1=red) to the deck for _ in range(size): number_red_cards = random.randrange(0,51) pct_red = 0 if number_red_cards == 0 else number_red_cards/50 deck.append(np.random.binomial(size=1, n=1, p=pct_red)) # count the number of red cards in the deck for x in deck: if x == 1: red += 1 # print the probability of drawing a red card print('The probability is ' + '{0:.2%}'.format(red/size))