题目下列几组数中,是勾股数的有( )①0.60.60.6,0.80.80.8,111②777,242424,252525③101010,242424,262626④13\frac{1}{3}31,14\frac{1}{4}41,15\frac{1}{5}51A.111组B.222组C.333组D.444组知识点:勾股数章节:图形的性质 / 三角形