Reading assignment:

• Chapter 2, pages 37-38

To be submitted:

• p. 41, problem 4 (save as p2_4.py).
  
  First two lines:

  c: 0 f: 32.0
  c: 1 f: 33.8
  

• p. 41, problem 5 (save as p2_5.py).
  
  Last two lines:

  9 	 81 	 729
  10 	 100 	 1000
  

• p. 41, problem 7 (save as p2_7.py).
  Every triple should be unique. Avoid repeated permutations.
  
  First two lines:

  3 	4 	5
  5 	12 	13
  

• p. 42, problem 18 (save as p2_18.py).
  
  
• p. 42, problem 19 (save as p2_19.py).
  
  
• p. 42, problem 21 (save as p2_21.py).
  
  Example:

  Enter a word: sequoia
  Letters: 7
  Vowels: 5
  Percentage of vowels: 71.4285714286
  

Additional problems

• p. 42: 20