15-5+10

=10+10

=10.2

=20

chuc bn hoc gioi!

100+400+500+1000=2000

k cho mk nha

Ta có :

\(B=\frac{10^{2001}+1}{10^{2002}+1}< \frac{10^{2001}+10}{10^{2002}+10}=\frac{10.\left(10^{2000}+1\right)}{10.\left(10^{2001}+1\right)}=\frac{10^{2000}+1}{10^{2001}+1}=A\)

\(\Rightarrow B< A\)

10x10000=100000 nha