title: greatest in number a,b,c
body: <pre><code>def greater(a,b):
      if a &gt; b:
          return a
      elif a==b:
          return "equal"
      else:
          return b
  
  def greatest(a,b,c):
  
      if a&gt;b and a&gt;c:
          return 'a'
  
      elif a==b and a==c:
          return "equal"
  
      elif b &gt; a and b &gt; c:
          return b
  
      elif b==a and b==c:
          return "equal"
  
      elif c==a and c==b:
          return "equal"
  
      else:
          return c
  
  bigger = greater(1,1)        
  biggest = greatest(bigger,1,1)
  print(biggest)
  
  
  error:Traceback (most recent call last):
    File "functions_execrise2.py", line 30, in &lt;module&gt;
      biggest = greatest(bigger,1,1)
    File "functions_execrise2.py", line 11, in greatest
      if a&gt;=b and a&gt;=c:
  TypeError: '&gt;=' not supported between instances of 'str' and 'int'
  </code></pre>