How many 4 letter passwords can be formed from the letters in the word panicky if each letter has to be distinct what if letters are allowed to be repeated

The word PANICKY has 7 letters. The password chosen must have 4 letters total.

If each letter has to be distinct, meaning that the letters all have to be different, then there are 7*6*5*4 = 840 ways.

If the letters are allowed to be repeated then there are 7*7*7*7 = 7^4 = 2,401 ways.

Idon’t know what the answer is i wish i could