${ }^{5} \mathrm{C}_{3}+{ }^{5} \mathrm{C}_{4}=?$

${ }^{10} \mathrm{C}_{7}$

${ }^{10} \mathrm{C}_{4}$

${ }^{6} \mathrm{C}_{3}$

${ }^{6} \mathrm{C}_{4}$