Thanks but I won't solve my problem.

When I change the method to thi= s :

def score(dice)
=3B total =3D 0
=3B h =3D Hash.= new(0)
=3B dice.each {|el| h[el] +=3D 1}

=3Bdice.each = {|number=2C count|
=3B =3B if number =3D=3D 1 and count =3D=3D = 6 then total =3D =3B 2000 end
=3B =3B if number !=3D 1 and = count =3D=3D 3 then total =3D total + 100 * count end
=3B =3B i= f number !=3D 1 and count =3D=3D 6 then total =3D =3B 600 end
= =3B =3B if number =3D=3D 1 and (count >=3B 3) then total =3D total + = ( 100 + ( count - 3)) end
=3B =3B if number =3D=3D 1 and (count= <=3B 3) then total =3D total =3B =3B + 100 * count end
= =3B =3B if number =3D=3D 5 and (count >=3B 3) then total =3D total + = ( 50 * (count -3)) end
=3B =3B if number =3D=3D 5 and (count &l= t=3B 3) then total =3D total + =3B 50 * count end
=3B =3B&n= bsp=3B }
=3B
=3B =3B return total

end

th= en I see this error message :

The answers you seek...
=3B u= ndefined method `>=3B' for nil:NilClass

Please meditate on the fol= lowing code:
=3B ./about_scoring_project.rb:43:in `score'
= =3B ./about_scoring_project.rb:37:in `each'
=3B ./about_scoring_pro= ject.rb:37:in `score'
=3B ./about_scoring_project.rb:58:in `test_sc= ore_of_a_single_roll_of_5_is_50'
=3B /home/roelof/koans/edgecase.rb= :398:in `send'
=3B /home/roelof/koans/edgecase.rb:398:in `meditate'=
=3B /home/roelof/koans/edgecase.rb:470:in `walk'
=3B /home= /roelof/koans/edgecase.rb:481:in `each_step'
=3B /home/roelof/koans= /edgecase.rb:479:in `each'
=3B /home/roelof/koans/edgecase.rb:479:i= n `each_step'
=3B path_to_enlightenment.rb:38:in `each_with_index'<= br> =3B /home/roelof/koans/edgecase.rb:478:in `each'
=3B /home/= roelof/koans/edgecase.rb:478:in `each_with_index'
=3B /home/roelof/= koans/edgecase.rb:478:in `each_step'
=3B /home/roelof/koans/edgecas= e.rb:476:in `catch'
=3B /home/roelof/koans/edgecase.rb:476:in `each= _step'
=3B /home/roelof/koans/edgecase.rb:469:in `walk'
=3B= /home/roelof/koans/edgecase.rb:491
=3B path_to_enlightenment.rb:38=

>=3B Date:= Wed=2C 26 Sep 2012 04:02:29 +0900
>=3B From: lists@ruby-forum.com
= >=3B Subject: Re: inject problem
>=3B To: ruby-talk@ruby-lang.org>=3B
>=3B Roelof Wobben wrote in post #1077510:
>=3B >=3B T= he only problem I have to solve is when dice is a empty array.
>=3B &g= t=3B you now get [] as answer but the answer has to be 0.
>=3B
>= =3B Yeah=2C you seem to have forgot "return total" at the end of the method=
>=3B (you can leave out the "return"=2C of course). Otherwise the re= turn value
>=3B is the result of "each" (which is an array).
>= =3B
>=3B --
>=3B Posted via http://www.ruby-forum.com/.
>= =3B