23. A dozen equals 12 and a gross equals $12^{2}$. Using base 12 , or duodecimal, arithmetic answer the following questions.
a) If 3 gross, 7 dozen, and 4 eggs are removed from a total of 11 gross and 3 dozen eggs, how many eggs are left?
b) If 5 truckloads of 2 gross, 3 dozen, and 7 eggs each are delivered to the supermarket, how many eggs were delivered?
c) If 11 gross, 10 dozen and 6 eggs are divided in 3 groups of equal size, how many eggs are in each group?
23. a) 7 gross, 7 dozen, and 8 eggs
c) 3 gross, 11 dozen, and 6 eggs
b) 11 gross, 5 dozen, and 11 eggs