180,131,95,70,?  Select.
A) 42  B) 43  C) 54  D) 40  E) 39
180 - 131= 
<gadget id="calculator">180 - 131</gadget>
<output>49</output>
49= 7^2   131 - 95= 
<gadget id="calculator">131 - 95</gadget>
<output>36</output>
36= 6^2   95 - 70= 
<gadget id="calculator">95 - 70</gadget>
<output>25</output>
25= 5^2   so we can write   70 - x = 16 = 4^2 , where x is the next number   x = 70 - 16= 
<gadget id="calculator">70 - 16</gadget>
<output>54</output>
54   so the next number will be 54   ANSWER:54
<result>C</result>
180,131,95,70,?