P= 7+77+777+...+777...7 (15 chu so)
ai giup minh se tick cho nhe cam on
Tính A=7+77+777+...+77...7(100 so 7)
Giai giup voi rat gap
7+77+777+....+77777...(10 so 7)
giai giup minh voi
☹➞cac ban giup minh cau nay voi
☛ tinh tong
M = 1+\(\dfrac{1}{5}\)+\(\dfrac{3}{35}\)+...\(\dfrac{3}{9603}\)+\(\dfrac{3}{9999}\)
➜giup minh nhanh nhe minh dang can gap lam moi nguoi a
➞thank you cac ban ❕
bai 1
tinh : 1 + 2 + 3 + ... + 1998 + 1999
bai 2 : tinh tong cua
a) tat ca cac chu so tu nhien co 3 chu so
b) tat ca cac so le ci 3 chu so
bai 3 : tinh tong
a) tat ca cac so : 2 , 5, 8,11, ... , 296
b) tat ca cac so : 7 , 11 ,15 , 19 , ..... , 283
bai 12
cho day so
a) 1 , 4 , 7 , 10 , 13 ,19
b) 5 , 8 , 11 , 14 , 17 , 20 , 23 , 26 , 29
c) 1 , 5 , 9 , 13 , 17 , 21 , ......
hay tim cong thuc bieu dien cac day so tren
mong cac ban lam ho minh minhdang can gap ban nao tra loi dau tien minh se tich ngay lap tuc
tong cua hai so bang 3857.chia so lon cho so nho, ta duoc thuong la 3 va du la 992. tim hai so
minh dang can gap, cac ban co gang giup minh nhe!
Cac ban tu bi giup minh tr aloi nhung cau hoi ma minh dat ra di,minh dang can gap,ai lam nhanh minh se tich cho nha,cam on cac ban nhiu nhe
CMR n=2.3.4.5.6. CTR cac so sau n+2;n+3;n+4;n+5;n+6;n+7 la hop so
Minh dang rat gap; cac ban giup minh nha; cam on nhieu
2+4+6+...+192 =
5+7+9+...+173 =
tinh nhanh nha cac ban
minh dang can gap