**Tell us what’s happening:**

In the last test my probability comes out to 0.259 instead of the expected 0.272, and i dont know why.

**Your code so far**

```
import copy
import random
# Consider using the modules imported above.
class Hat:
def __init__(self,**kwargs):
self.contents = []
for key,value in kwargs.items():
for i in range(value):
self.contents.append(key)
def draw(self, num_drawn):
if num_drawn > len(self.contents):
return
self.drawn_balls = []
for i in range(num_drawn):
randint = random.randint(0,len(self.contents)-1)
self.drawn_balls.append(self.contents[randint])
self.contents.pop(randint)
return self.drawn_balls
def return_balls(self):
for i in self.drawn_balls:
self.contents.append(i)
def experiment(hat, expected_balls, num_balls_drawn, num_experiments):
m = 0
for i in range(0, num_experiments):
hat.draw(num_balls_drawn)
hits = 0
for color, count in expected_balls.items():
if hat.drawn_balls.count(color) >= count:
hits += 1
if hits == len(expected_balls):
m += 1
hat.return_balls()
return m / num_experiments
```

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**Challenge:** Scientific Computing with Python Projects - Probability Calculator

**Link to the challenge:**