1+1+1+1+1+1+1+1+1+1=9
9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = ?
= 100 nha bạn tk nha
chúc bạn học giỏi
9 + 9 + 9 + 9 +9 +9 +9 +9 +9 +9 + 1 +1 + 1 + 1 + 1 + 1 + 1 + 1 +1 +1
= (9 + 1) + (9 + 1) + (9 + 1) + (9 + 1) + (9 + 1) + (9 + 1) + (9 + 1) + (9 + 1) + (9 + 1) + (9 + 1)
= 10 + 10 + 10 + 10 + 10 +10 + 10 + 10 +10 +10
= 100
1.1.1.1.11..1.1.11..1..1.1..1.1.1.1.1.1+11+1+1+1+1+1+1+1+1+1+1+1+1+1+1-9+9+9+9+9.3.0
Đm mày nứng à
zzzz ko trả lời thì thôi chứ đừng chửi thề nhé
bấm mt k nhanh hơn chắc con đ*
1+1+1+1+1+1+1+1+1+1+1+9+9+9+
1+1+1+1+1+2+3+4+5+6+7+8+9+10 x 1+1+1+1+1+2+3+4+5+6+7+8+9+10 +1+1+1+1+1+2+3+4+5+6+7+8+9+10 - 10 x 9 - 9 + 45 +46 +47 =
1+1/2+1/3+1/4+....+1/8+1/9+1/10
1/1*10+1/2*9+1/3*8+......+1/8*3+1/2*9+1/10*1
1+1/2+1/3+1/4+......+1/8+1/9
________________________=
1/1*9+1/2*8+1/3*7+........+1/8*2+1/9*1
1+1+1+1+1+1+1+1+1+1+1+1+2+5+7+9+3+1+1+1+5+1+4+1+6+1+3+9=
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 2 + 5 + 7 + 9 + 3 + 1 + 1 + 1 + 5 + 1 + 4 + 1 + 6 + 3 + 9
= 12 + 26 + 32
= 70
chúc bạn học tốt ^ _ ^
(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7)+(1/7-1/8)+(1/8-1/9)+(1/9-1/10)
(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7)+(1/7-1/8)+(1/8-1/9)+(1/9-1/10)
=1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9+1/9-1/10
=1/2-1/10
=2/5