Five diplomats are organizing a lottery.
No one knows in advance what the winning number will be.
Procedure:
Prepare your lottery number prediction.
Shuffle flags.
Shuffle five cards.
All cards are face down.
Each card has different numbers.
Match 1 flag with 1 card.
Record the flag and matching number found on the card.
Total the numbers.
Look at your prediction
Challenge:   Explain how is this done?

Watch the video.