6^(2k-1)*0,5^(-1-k)/(36*2)^k-1=6^(2k-1)*0,5^(-1-k)/6^(2k-2)*2^(k-1)=
6*2^(k+1)/2^(k-1)=6*2^2=6*4=24
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6^(2k-1)*0,5^(-1-k)/(36*2)^k-1=6^(2k-1)*0,5^(-1-k)/6^(2k-2)*2^(k-1)=
6*2^(k+1)/2^(k-1)=6*2^2=6*4=24