diff --git a/prep exercises/__pycache__/dataclasses.cpython-312.pyc b/prep exercises/__pycache__/dataclasses.cpython-312.pyc
new file mode 100644
index 0000000..9efc78f
Binary files /dev/null and b/prep exercises/__pycache__/dataclasses.cpython-312.pyc differ
diff --git a/prep exercises/bank_account.py b/prep exercises/bank_account.py
new file mode 100644
index 0000000..276c13f
--- /dev/null
+++ b/prep exercises/bank_account.py	
@@ -0,0 +1,30 @@
+def open_account(balances, name, amount):
+    balances[name] = amount
+
+def sum_balances(accounts):
+    total = 0
+    for name, pence in accounts.items():
+        print(f"{name} had balance {pence}")
+        total += pence
+    return total
+
+def format_pence_as_string(total_pence):
+    if total_pence < 100:
+        return f"{total_pence}p"
+    pounds = int(total_pence / 100)
+    pence = total_pence % 100
+    return f"£{pounds}.{pence:02d}"
+
+balances = {
+    "Sima": 700,
+    "Linn": 545,
+    "Georg": 831,
+}
+
+open_account(balances, "Tobi", 9.13)
+open_account(balances, "Olya", "£7.13")
+
+total_pence = sum_balances(balances)
+total_string = format_pence_as_string(total_pence)
+
+print(f"The bank accounts total {total_string}")
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diff --git a/prep exercises/dataclasses_exercise.py b/prep exercises/dataclasses_exercise.py
new file mode 100644
index 0000000..f48d26c
--- /dev/null
+++ b/prep exercises/dataclasses_exercise.py	
@@ -0,0 +1,20 @@
+from dataclasses import dataclass
+from datetime import date
+
+@dataclass(frozen=True)
+class Person:
+    name: str
+    date_of_birth: str
+    preferred_operating_system: str
+
+    def is_adult(self):
+        today_date = date.today()
+        birth_date = date.fromisoformat(self.date_of_birth)
+        age = today_date.year - birth_date.year
+
+        return age >= 18
+
+
+imran = Person("Imran", "2019-10-18", "Ubuntu")
+
+print(imran.is_adult())
diff --git a/prep exercises/generic_exercise.py b/prep exercises/generic_exercise.py
new file mode 100644
index 0000000..1429252
--- /dev/null
+++ b/prep exercises/generic_exercise.py	
@@ -0,0 +1,22 @@
+from dataclasses import dataclass
+from typing import List
+
+@dataclass(frozen=True)
+
+class Person:
+    name: str
+    children: List["Person"]
+    age: int
+
+fatma = Person(name="Fatma", children=[], age=25)
+aisha = Person(name="Aisha", children=[], age = 15)
+
+imran = Person(name="Imran", children=[fatma, aisha], age = 40)
+
+def print_family_tree(person: Person) -> None:
+    print(person.name)
+    
+    for child in person.children:
+        print(f"- {child.name} ({child.age})")
+
+print_family_tree(imran)
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diff --git a/prep exercises/objects_and_classes.py b/prep exercises/objects_and_classes.py
new file mode 100644
index 0000000..a233a7f
--- /dev/null
+++ b/prep exercises/objects_and_classes.py	
@@ -0,0 +1,18 @@
+from datetime import date
+
+class Person:
+    def __init__(self, name: str, date_of_birth: str, preferred_operating_system: str, address: str):
+        self.name = name
+        self.date_of_birth = date.fromisoformat(date_of_birth)
+        self.preferred_operating_system = preferred_operating_system
+        self.address = address
+
+    def is_adult(self):
+        today_date = date.today()
+
+        return (today_date.year - self.date_of_birth.year) >= 18
+
+
+imran = Person("Imran", "2005-12-04", "Ubunut", "Wardend Road, Birmingham")
+
+print(imran.is_adult())
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diff --git a/prep exercises/test.py b/prep exercises/test.py
new file mode 100644
index 0000000..098f359
--- /dev/null
+++ b/prep exercises/test.py	
@@ -0,0 +1,5 @@
+def double(n): 
+    return n * 3
+
+num = double(21)
+print(num)
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