Ask Question
24 July, 16:03

Ruth has the following set of refrigerator magnets: {A, B, C, D, E}. (a) How many different three-letter strings can she form with these magnets? (b) How many different three-letter strings can she form if the middle letter must be a vowel?

+1
Answers (1)
  1. 24 July, 16:40
    0
    a. 60

    b. 24

    Step-by-step explanation:

    a. We use permutation, it would be 3 taken out of 5, or 5*4*3

    b. if A or E must be used, then we have 4*3*2
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Ruth has the following set of refrigerator magnets: {A, B, C, D, E}. (a) How many different three-letter strings can she form with these ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers