<PRE><B>Question 250304</B>
To do this use a Sample Space diagram. With it the problem is ridiculously simple, without it it is not at all easy. Number is the addition of the values
Value of first die across top, value of second die down the side

      1   2   3   4   5   6
     -----------------------
  1 | 2   3   4   5   6   7           
  2 | 3   4   5   6   7   8
  3 | 4   5   6   7   8   9
  4 | 5   6   7   8   9  10               
  5 | 6   7   8   9  10  11
  6 | 7   8   9  10  11  12

There are 6 x 6 or 36 options, all are equally likely, 7 occurs 6 times, so the chances are 6/36 or 1/6. 11 occurs 2 times so chances are 2/36 or 1/18. 7 or 11 are 8 of the 36 options so 8/36 or 2/9. You can even find out chance of a prime number. the 2,3,5,7,11 options add up to 15, so 15/36 or 5/12 is the chance of that.</PRE>