If two integers x, y (x>y) are selected from -10 to 1 (inclusive), how many possible cases are there?	Choose the correct answer: A) 150 B) 66 C) 190 D) 210 E) 240
If two integers x, y (x&gt;y) are selected from -10 to 9 (inclusive), how many possible cases are there?   A. 150   B. 180   C. 190   D. 210   E. 240   --&gt; 12C2=12*11/2= 
<gadget id="calculator">12*11/2</gadget>
<output>66</output>
66. Therefore, the answer is 66.
<result>B</result>
If two integers x, y (x>y) are selected from -10 to 1 (inclusive), how many possible cases are there?