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Keep getting: You got 1 out of 10 right.

Can someone help me out here? Thanks!

```import datetime
import random

class Quiz:
questions = []

def __init__(self):
for _ in range(10):  # Generate 10 random questions with numbers from 1 to 10
num1 = random.randint(1, 10)
num2 = random.randint(1, 10)
question = random.choice(question_types)(num1, num2)
self.questions.append(question)  # Add these questions into self.questions

def take_quiz(self):
# Log the start time
self.start_time = datetime.datetime.now()
for question in self.questions:
# Log if they got the questions right
# Log the end time
else:
self.end_time = datetime.datetime.now()
# Show a summary
return self.summary()

correct = False
# Log the start time
question_start = datetime.datetime.now()
answer = input(question.text + ' = ')
correct = True
# Log the end time
question_end = datetime.datetime.now()
# If the answer's right, send back True
# otherwise, send back False
# send back the elapsed time
return correct, question_end - question_start

def total_correct(self):
# Return the total number of correct answers
total = 0
total += 1

def summary(self):
# Print how many you got right and the total number of questions. ex: 5/10
print("You got {} out of {} right.".format(self.total_correct(), len(self.questions)))
# Print the total time for the quiz: 30 seconds!
print("It took you {} seconds to complete!".format((self.end_time - self.start_time).seconds))

Quiz().take_quiz()
```