ttGWD1-28

zm_patrickS

Q28:


   
For any positive integer n, the sum of the
first n positive integers equals [n(n+1)]/2.
What is the sum of all the even integers between 99 and 301?


   



   
A.      10,100


   
B.      20,200


   
C.      22,650


   
D.     40,200


   
E.      45,150

I cannot get the right answer B. Please help!