Given the different situation below illustrate the number of permutation in three ways:
1.) How many three-letter code words can be formed from the letters of the word LOVE if repetition is not allowed?
2.) How many two-digit numbers can be formed from the numbers 1, 2, 3, 4, 5 if repetition is not allowed?
3.) A person has to choose two-digits from 1, 2, 3, and 4 numbers to make two-digit number. How many different arrangements of the digits are possible if repetition is allowed?
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1. Repetition is not allowed
4 x 3 x 2 = 24 ways
2. Repetition is allowed
4 x 4 x 4 = 64 ways
3. The answer is 12 two digit numbers.