numbers = [1, 2, 3, 4, 5, 6]

# Use lambda with filter to keep even numbers
evens = list(filter(lambda n: n % 2 == 0, numbers))

# Use lambda with map to square each even number
squared_evens = list(map(lambda n: n ** 2, evens))

print("Even numbers:", evens)
print("Squared evens:", squared_evens)