1/1*6 +1/6*11+ 1/11*16+ 1/16*21+ 1/21*26+1/26*31+...+1/51*56
1/1*6 +1/6*11+ 1/11*16+ 1/16*21+ 1/21*26+1/26*31+...+1/51*56
1 /6×11+1/11×16+1/16×21+1/21×26+1/26×31+1/31×36 =
计算1/1*6+1/6*11+1/11*16+1/16*21+.+1/51*56
计算1/(6*11)+1/(11*16)+1/(16*21)+1/(21*26)+1/(26*31)+1/(31*36)
1/1*6+1/6*11+1/11*16+.+1/51*56如何巧算?
帮我完成一个六阶幻方,1 6 8 11 15 16 21 22 26 29 31 36
26,11,31,6,36,1,41,()
简便方法运算用简便方法运算.1/1*6+1/6*11+1/11*16+1/16*21 1/6+1/12+1/20+1/3
(1/11+1/21+1/31+1/41)*(1/21+1/31+1/41+1/51)-(1/11+1/21+1/31+
1 {1/11+1/21+1/31+1/41}*{1/21+1/31+1/41+1/51}-{1/11+1/21+1/3
(1/11+1/21+1/31++1/41)*(1/21+1/31++1/41+1/51)-(1/11+1/21+1/3
三十六宫格规律 1 6 8 11 15 16 21 22 26 29 31 36 对角是这样的,其于的待填,急