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1)print("Hello world")
2)a = "Hello world"
print(a)
3)a = 7
b = 3
print(a + b)
4)a = "pass"
b = "word"
result = a + b
print(result)
5)text = "python code"
result = text[::-1]
print(result)
6)my_list = []
my_list.extend(range(0, 6))
print(my_list)
7)my_list = []
my_list.extend([0, 1, 2, 3, 4, 5])
print(my_list[0])
print(my_list[5])
8)my_list = [1, 4, 2, 7, 6, 9]
result = my_list[0] + my_list[2] + my_list[-1]
print(result)
9)my_list = [1, 4, 2, 7, 6, 9]
result = my_list[-1] - my_list[2] - my_list[3]
print(result)
10)my_list = ['th', 'gr', 'on', 'tr', 'pr', 'py']
result = my_list[-1] + my_list[0] + my_list[2]
print(result)
11)text = "Ivan, Vladimir, Olga, Sergei"
result = text.replace("Olga", "Olya")
print(result)
12)var = 5.5
result = type(var)
print(result)
13)my_list = [[1, 2, ['Hello', 3]], ['list', 4], 5]
result = my_list[0][2][0]
print(result)
14)my_list = ['New', '+', 'York']
my_list[1] = '-'
result = my_list[0] + my_list[1] + my_list[2]
print(result)
15)my_list = [100, 200, 300, 400, 500]
result = my_list[::-1]
print(result)
16)my_list = ["Mike", "", "Emma", "Kelly", "", "Brad"]
result = list(filter(None, my_list))
print(result)
17)my_list = [1, 2, 3, 4, 5, 6, 7]
result = [x**2 for x in my_list]
print(result)
18)my_list = [38, 33, 19, 69, 41, 32]
p1 = my_list[0] * my_list[1]
p2 = my_list[2] * my_list[3]
p3 = my_list[4] * my_list[5]

print(p1 if p1 > p2 and p1 > p3 else p2 if p2 > p3 else p3)
19)my_list = ["Adam", "Dean", "Harvey", "Mick", "John"]

if "Leo" in my_list:
    print("+")
else:
    print("-")
20)result = range(0, 5)
for i in result:
    print(i)
21)my_list = ["Adam", "Dean", "Adam", "Adam", "John"]
result = my_list.count("Adam")
print(result)
22)my_list = ["Adam", "Dean", "Harvey", "Mick", "John"]
for name in my_list:
    if name == "Adam":
        print("Found")
23)def calculate_average(age1, age2):
    return (age1 + age2) / 2

result = calculate_average(23, 32)
print(result)
24)def calculate_perimeter(a, b):
    return 2 * (a + b)

result = calculate_perimeter(6, 2)
print(result)
25)def multiply_all(numbers):
    total = 1
    for num in numbers:
        total = total * num
    return total

result = multiply_all([8, 2, 3, 2, 7])
print(result)
26)def check_even(number):
    if number % 2 == 0:
        return True
    else:
        return False

print(check_even(4))
print(check_even(7))  
27)def merge_strings(s1, s2, s3):
    return s1 + s2 + s3

result = merge_strings("me", "ss", "age")
print(result)
28)class MyClass:
    color = "green"

print(MyClass.color)
29)class MyClass:
    def square(self, number):
        return number ** 2

obj = MyClass()
result = obj.square(9)
print(result)
30)def calculate_area(radius):
    return 3.14 * radius ** 2

class CircleData:
    radius_value = 6

print(calculate_area(CircleData.radius_value))