1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50.
18+19+20+21+22+23+24+25+26+27+28+29+30=?
Ai nhanh tick cho! Rảnh kb & ib với mk!!!!
1/5 + 5/6 + 10/12 + 19/20 + 29/30 + 41/42 + 55/56 + 71/71 + 89/90
Lm hộ mk vs mk đang cần gấp giải chi tiết cho mk nha mk sẽ tick cho
Viết tiếp vào dãy số sau cho đủ 10 số hạng:
13; 19; 25; 31; 37; 43; 49; 55 ; ............ ; .................
(6*5-30)*(19+21+23+25+27+29+31)=?
1+7+13+19+25+31+37+43+49+55+61
Tính rồi viết (theo mẫu):
a)25 : 5 42 : 2 99 : 3
............ ............ ...........
............ ............ ...........
............ ............ ...........
b)30 : 4 38 : 5 49 : 6
............ ............ ...........
............ ............ ...........
............ ............ ...........
a)26 : 3 32 : 4 60 : 6 55 : 5
............ ............ ........... ...........
............ ............ ........... ...........
69339:3=....... 16547:2=......... 86428:4=........ 16547:2=....... 25837:3=......
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+36+37+38+39+40=