2,12,30,56() 2,5,14,41()() 2,5,13,36,104()2,12,30,56()()
问题描述:
2,12,30,56() 2,5,14,41()() 2,5,13,36,104()
2,12,30,56()()
答
答案90规律:1*2=23*4=125*6=307*8=569*10=90答案:122规律2+3=55+9=1414+27=4141+81=122(其中3*3=9 9*3=27 27*3=81)答案:307规律:2*3-1=55*3-2=1313*3-3=3636*3-4=104104*3-5=307