81 64 49_25_9 4 1
81,64,49,(),25,(),9,4,(),1
81,64,49,36,( ),( ),9,4,1
填空:81 ,64 ,49 ,36,(),(),9 ,4 ,1
81,64,49,36
找规律!1,4,9,25,a,49,64,81,a
1+4+9+16+25+36+49+64+81+100+121+144+169+196= 怎样简算
求4*16*36*64*100*144-1*9*25*49*81*121后除以13的余数是多少?
"画一画,圈一圈(3)81 64 49 25 9 4 1 36 40 16 44
一、1,4,9,16,,,49,64,.
计算:36+49+64+81+…+400?
找规律 121,100,81,64,49
81 64 49 36 ( ) ( )