2-C. For example, Britain once used a complicated counting system for its currency units; 1 pound equaled 20 shillings, but 1 shilling equaled 12 pennies.For example, Britain once used a complicated counting system for its currency units; 1 pound equaled 20 shillings, but 1 shilling equaled 12 pennies.
3-C. The base-10 system, on the other hand, would make computer engineering much more complicated.The base-10 system, on the other hand, would make computer engineering much more complicated.