A door's keypad system requires a 4-letter code using the letters A-G. Each letter may be used only once. Time left 2:04:26 Is this a permutation or combination? Choose... 5040 How many different codes are possible 840 permutation combination 35Four cards are randomly drawn from a standard deck of 52 cards. Answer the questions below: How many 4-card groups are possible? J Choose... 6,497,400 4 I 270,725 270,725 16 I 270,725 Find the probability of selecting 1 ace and 3 kings