Four-Digit Prime Numbers by Tens (Part 4: 4000-5000)
You will be given four four-digit numbers that differ only by the last digit being 1, 3, 7, or 9. Answer which ones are prime numbers. Example: If you are given "21, 23, 27, 29", only 23 and 29 are prime numbers, so you should choose "3, 9"
Start by naming any country that France borders. Then name any country that borders any of those countries. Then keep going until there are no more countries left to name.