The sum of the even numbers between 1 and n is 95*96, where n is an odd number, then n=?	Select the correct option
A) 167
B) 175
C) 183
D) 191
E) 199
Let n-1 = 2a.   2+4+...+2a = 2*(1+2+...+a) = 2*(a)(a+1)/2 = (a)(a+1) = 95*96   Then a = 95 and n = 191.   The answer is 191.
<result>D</result>
The sum of the even numbers between 1 and n is 95*96, where n is an odd number, then n=?