Question 6
Arrange nine flat coins (five pennies, two nickels and two quarters; no stacking) so that each coin touches exactly the coins listed. Each penny: penny A touches 1 penny and 1 nickel; pennies B, C and D each touch 2 pennies; penny E touches 1 penny and 1 nickel. Each nickel touches 1 penny, 1 nickel and 2 quarters. Each quarter touches 2 nickels. Describe the arrangement.
