\(HCl + NaOH \to NaCl + H_2O\\ n_{NaOH} = n_{HCl} = 0,02.0,1 = 0,002(mol)\\ C_{M_{NaOH}} = x = \dfrac{0,002}{0,01} = 0,2(M)\)
\(n_{HCl}=\dfrac{20}{1000}\cdot0.1=2\cdot10^{-3}\left(mol\right)\)
\(NaOH+HCl\rightarrow NaCl+H_2O\)
\(2\cdot10^{-3}...2\cdot10^{-3}\)
\(C_{M_{NaOH}}=\dfrac{2\cdot10^{-3}}{0.01}=0.2\left(M\right)\)