Sharpen Your Coding Skills

# Guess the output
def add_item(x, lst=[]):
    lst.append(x)
    lst.append(len(lst))
    return lst

print(add_item(1))
print(add_item(2))
            

# Find factorial
def factorial(n):
    return 1 if n <= 1 else n * factorial(n-1)

print(factorial(5))
            

# Check if word is a palindrome
def is_palindrome(s):
    return s == s[::-1]

print(is_palindrome("level"))