Ifaequals the sum of the even integers from 2 to 120, inclusive, andbequals the sum of the odd integers from 1 to 119, inclusive, what is the value of a - b ?
Select:
A) 60	B) 10	C) 19	D) 20	E) 21
This is a solution from Beatthegmat:   even numbers:   (120-2)/2 + 1= 
<gadget id="calculator">(120-2)/2 + 1</gadget>
<output>60</output>
60 even integers.   (120+2)/2= 
<gadget id="calculator">(120+2)/2</gadget>
<output>61</output>
61 is the average of the even set.   sum= avg*(#of elements) = 61*60= 
<gadget id="calculator">61*60</gadget>
<output>3_660</output>
3660= a   odd numbers:   (119-1)/2 + 1= 
<gadget id="calculator">(119-1)/2 + 1</gadget>
<output>60</output>
60 odd integers.   (119+1)/2= 
<gadget id="calculator">(119+1)/2</gadget>
<output>60</output>
60 is the average of the odd set.   sum= avg*(#of elements) = 60*60= 
<gadget id="calculator">60*60</gadget>
<output>3_600</output>
3600= b   a-b = 3660 - 3600= 
<gadget id="calculator">3660 - 3600</gadget>
<output>60</output>
60. 60nswer : 60
<result>A</result>
Ifaequals the sum of the even integers from 2 to 120, inclusive, andbequals the sum of the odd integers from 1 to 119, inclusive, what is the value of a - b ?