Question

Which of the following expression does not have a value $5·23$ $?$

• A. $1·8+3·43$
• B. $6·5-1·27$
• C. $5+\frac{2}{10}+\frac{3}{1000}$
• D. $8·8-6+2·43$

Answer 1

The correct option is C

$5+\frac{2}{10}+\frac{3}{1000}$

$$\begin{gathered} \mathrm{Option}\mathbf{A}\mathbf{}=1·8+3.43 \\ =5·23 \\ \mathrm{Option}\mathbf{B}=6·5-1·27 \\ =5·23 \\ \mathrm{Option}\mathbf{C}=5+\frac{2}{10}+\frac{3}{1000} \\ =5+0·2+0·003 \\ =5·203 \\ \mathrm{Option}\mathbf{D}=8·8-6+2·43 \\ =2·8+2·43 \\ =5·23 \end{gathered}$$

Hence Option $\mathbf{C}$ is the correct answer.