9 x 9 - 9 x 1 = 9 ( 9 - 1 ) = 9 x 8 = 72

1 + 1 + 1 x 0 = 2 + 0 = 2

9 x 9 x 0 + 10 + 2 x 0 = 0 + 10 + 0 = 10

9.9-9.1 = 72

1+1+1.0= 0

9.9.0+10+2.0 =0

9x9-9x1=72

1+1+1x0=0

9x9x0+10+2x0=10

10 + 30 + 999 + 394 - 100 + 1000 - 1 x 0 = 2333

=2333 nha bạn. kb với mk nha.

Số cần tìm là :

10 + 30 + 999 + 394 - 100 + 1000 - 1 x 0 = 2333

ĐÁp số : 2333

1+1*0=1+0=1

1+1x0=1

1+1x0

=1+0

=1

Vậy 1+1x0=1

1+1=2

đúng 100%

\(1+1\cdot0\)

\(=1+0\)

\(=1\)

1+1x0=

1+0=

=1

1+10=11

1+10=11

k mk nha

1 + 10 = 11

\(K=\frac{10}{7.12}+\frac{10}{12.17}+\frac{10}{17.22}+...+\frac{10}{502.507}\)

\(\Leftrightarrow K=\frac{10}{5}\left(\frac{1}{7}-\frac{1}{12}+\frac{1}{12}-\frac{1}{17}+\frac{1}{17}-\frac{1}{22}+...+\frac{1}{502}-\frac{1}{507}\right)\)

\(\Leftrightarrow K=2\left(\frac{1}{7}-\frac{1}{507}\right)\)

\(\Leftrightarrow K=2\cdot\frac{500}{3549}\)

\(\Leftrightarrow K=\frac{1000}{3549}\)

5xK=5/7.12+5/12.17+..............+5/502.507

5xK=(1/7-1/12)+(1/12-1/17)+........+(1/502-1/507)

5xK=1/7-1/507

5xK=500/3549

K   =500/3549:5

K    =100/3549

bằng 35 nha

5 + 5 + 5 + 10 + 10 

= ( 5 x 3 ) + ( 10 x2 )

= 15 + 20 

= 35 

nha bn

\(5+5+5+10+10=35\)

1x0+1x0+1x0+1x0=0

1.0+1.0+1.0+1.0

=0+0+0+0

=0

1.0+1.0+1.0+1.0=0

102 nha

mk nhanh nhất đó

102 nha