I designed and built a circuit with the function of being a lucky number game. The user picks a number and if they are correct the LED will light up. In this particular version the lucky numbers are 1 and 6 so the user has two chances to get the right choice.

Parts used: 1 EA 3 input AND gate, 1 EA 2 input OR gate, 1 EA HEX Inverter, I EA LED, 5 V power supply.