Last Question:
What is the difference between the red letters and the black letters?
H F O J I G X L
Answer:
The black letters are the capital letters that have both horizontal and vertical symmetry. The red letters are asymmetrical.
Today’s Problem:
You task is to place seven beads on a necklace. Five of the beads are red and two are green. How many different necklaces can be made using the five identical red beads the the two identical green beads?