How many products will formed in the following reaction

${\text{CH}}_{\text{3}}-\text{C}l+{\text{CH}}_{\text{3}}-{\text{CH}}_{\text{2}}\text{C}l\underset{\text{dry\hspace{0.17em}\hspace{0.17em}ether}}{\overset{\text{Na}}{\to }}$

When a mixture of two different alkyl halides is used, a mixture of three different alkanes is obtained. This is called crossed-Wurtz reaction.

$\begin{array}{l}{\text{CH}}_{\text{3}}-\text{C}l+{\text{CH}}_{\text{3}}-{\text{CH}}_{\text{2}}\text{C}l\underset{\text{dry\hspace{0.17em}\hspace{0.17em}ether}}{\overset{\text{Na}}{\to }}{\text{CH}}_3-{\text{CH}}_3+{\text{CH}}_{\text{3}}-{\text{CH}}_{\text{2}}-{\text{CH}}_3\\ +{\text{CH}}_{\text{3}}-{\text{CH}}_2-{\text{CH}}_2-{\text{CH}}_3\end{array}$