Find the rules 1: Twenty five, (), thirty, (), forty five 2:( ),( ),( ),63,( ),( ),( ),89,( )

Find the rules 1: Twenty five, (), thirty, (), forty five 2:( ),( ),( ),63,( ),( ),( ),89,( )

2:( 54),(56 ),(59 ),63,( 68),(74 ),( 81),89,( 98)
The difference is 2,3,4,5,6,7,8,9,