**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
deck = []
red = 0
size = 1_000_000
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))
for x in deck:
if x == 1: red += 1
print('The probability is ' + '{0:.2%}'.format(red/size))
```