Author's Note: 1a. By using a truth, the expressions AB C B B’ C’ AB’C AC (AC) AB’C+AC+BC’ (AB’C+AC+BC’)

By using a truth, table show that the expressions – A B C B’ C’ AB’C AC (AC)’ BC’ AB’C+AC+BC’ (AB’C+AC+BC’)’ 0 0 0 1 1 0 1 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0