def addNumbers(): #Default function
    print("Hi")
    print(5 + 10)

def subNumbers(x, y): #Parameterised function
    print(x + y)

def mulNumbers(x, y):
    x = "Kriti"
    y = 150

addNumbers()
subNumbers(10, 20)
product = mulNumbers(10, 20, 30)

print("The product is", product)