In shuffling a pack of cards, four are accidentally dropped then probability that all are kings:

$\frac{{^{13}C}_1×{^{13}C}_1×{^{13}C}_1×{^{13}C}_1}{{^{52}C}_4}$ $\frac{{^{26}C}_3×{^{26}C}_1}{{^{52}C}_4}$ $\frac{{^{4}C}_4}{{^{52}C}_4}$ $\frac{{^{48}C}_4}{{^{52}C}_4}$

$\frac{{^{13}C}_1×{^{13}C}_1×{^{13}C}_1×{^{13}C}_1}{{^{52}C}_4}$