(COMPETITION FINISHED) Crack the Codes and win tons of Gold bars!

Competition is closed and the correct answer is 30  

Lucky winners on this challenge are: 

@Lim
@RegalRenz
@mysticalmysty
@Sabrina_Menin
@Foley1362
@Elsa
@yvesdesjardins
@Lilmamachris33
@Ashraf
@award0925

Congratulations! Your games have been credited already

If you took part on all of the Mastermind challenges be sure to check the winners here.