# practice questions 1. Abdulaziz and Cleopatra are trying to convert the hexidecimal number "A3" into [denary](). Read their methods, and decide who is correct. - Abdulaziz: In base 10, A is 10 and 3 is three. Therefore `10+3=13`. - Cleopatra: In base 10 A is 10, but it is in the 16s column, so multiply by 13 and add (so `10*16+3=163`).