Question

IN DETAIL EXPLAIN

Problem 1: (a) An outfit consists of a blouse and a skirt. If there are 6 skirts and 8 blouses from which to choose, then how many possible blouse-skirt choices are there? (b) In the worst case, how many attempts would a hacker try before finding a password given that it is 8 characters long that can be case-sensitive alphabetic, 10 digit, or the seven punctuation characters of!, a, S, &, *, G) Example valid passwords: aaaaaaaa, AAAAAAAA, a@@@@@@a, 22222222, jSk7uTe8 Problem 2: Let D ,2,3, 4, 5, 6, 7, 8, 93 and Q A, B, C, D, E (a) How many 5-permutations of Q are there? (No repetition of character within a string and order matters) IDI (b) How many 4-element subsets of D are there? (Hint: use()where l is set size) (c) How many license plates are there consisting of 3 letters from set Q followed by 2 numbers from set P? (Repetitions are allowed for example DAD 99.)

Answer 1

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