Permutations

• How Many Ways Are There to Eat Lunch?
  There is no single count without a menu and rules. Define the lunch choices, then use the product rule, sum rule, or permutations as needed.
• How Many Words Can Be Formed Using 2 Vowels and 3 Consonants?
  Choose 2 of the 4 vowels and 3 of the 5 consonants, then arrange all 5 distinct letters: the total is 7,200 words.