title: how to random placement of UIButton and value
body: <p>i have a question view and will show 4 answers, only 1 are correct.</p>
  
  <p>but i do not want the same button to be always the correct answer.</p>
  
  <p>i will like to know how do i do a random placement of 4 UIButton and value every time.</p>
  
  <p><img src="https://i.stack.imgur.com/zNkdk.png" alt="enter image description here"></p>
  
  <p>when user go to this question again the answer will be in differ button</p>
  
  <p><img src="https://i.stack.imgur.com/kCJSp.png" alt="enter image description here"></p>
  
  <p>my placement of X,y,W,H</p>
  
  <p>button 1
  5,219,230,45</p>
  
  <p>button 2
  5,273,230,45</p>
  
  <p>button 3
  244,224,230,45</p>
  
  <p>button 4
  244,273,230,45 </p>