设连续三项为第k,k+1,k+2项则C(n,k-1):C(n,k):C(n,k+1)=1:2:3解得:n=14,k=5,所求连续三项为第5,6,7三项又由以知得:C(14,13)x^log2(x)=112,即x^log2(x)=8,所以x=2^(√3)或2^(-√3),而这连续三项为C(14,4)x^10log2(x)=...