If two integers x, y (x>y) are selected from -10 to 4 (inclusive), how many possible cases are there?
Select: A) 150 B) 180 C) 190 D) 210 E) 105
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; 15C2=15*14/2= 
<gadget id="calculator">15*14/2</gadget>
<output>105</output>
105. Therefore, the answer is 105.
<result>E</result>
If two integers x, y (x>y) are selected from -10 to 4 (inclusive), how many possible cases are there?