# Program 9: Positive/Negative
def main():
    num = int(input("Enter number: "))

    print("Checking...")

    if num >= 0:
        print("Positive number")
    else:
        print("Negative number")

main()

Enter number:  2


Checking...
Positive number

# Program 10: Sum of N numbers
def main():
    n = int(input("Enter value: "))

    total = 0

    for i in range(1, n+1):
        total += i

    print("Sum is:", total)

main()

Enter value:  24


Sum is: 300

# Program 11: Multiplication Table
def main():
    num = int(input("Enter number: "))

    print("Multiplication Table:")

    for i in range(1, 11):
        result = num * i
        print(num, "x", i, "=", result)

main()

Enter number:  2


Multiplication Table:
2 x 1 = 2
2 x 2 = 4
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
2 x 10 = 20