A = 1/5 + 1/10 + 1/20 + 1/40 + ... + 1/1280
tinh nhanh
tính nhanh :
a. 1/12 + 1/20 + 1/30 + 1/42
b. 1/5 + 1/10 + 1/20 + 1/40
1.Tính nkanh
a, A= 1/10 + 1/40 + 1/88 + 1/154 + 1/238 + 1/340
b, 5/6 + 11/12 + 19/20 + 41/42 + 56/56 + 71/72 + 89/90
Mjnk đang cần gấp bn nào lm dc mik tick 7 tick nka
1\5+1\10+1\20+1\40+….+1\1280
1/5+1/10+1/20+1/40+......+1/1280
tính nhanh :
1/5+4/10+9/15+16/20+25/25+36/30+49/35+64/40+81/45
cần gấp mn !!!
tính nhanh:1/5+1/10+1/20+1/40+........+1/1280
Tính nhanh
a, 1/5 + 1/10 + 1/20 + 1/40 + ... + 1/1280
b, 1/3 + 1/9 + 1/27 + 1/81 + ... +1/ 59049
1/5+1/10+1/20+1/40+1/80+1/160