For all even integers n, h(n) is defined to be the sum of the even integers between 2 and n, inclusive. What is the value of h(20)/h(10) ?  Choose one:  A) 1.8  B) 60  C) 6  D) 18  E) 3
CONCEPT: When terms are in Arithmetic Progression (A.P.) i.e. terms are equally spaced then   Mean = Median =(First+Last)/2   and Sum = Mean*Number of terms   h(20) = [(2+20)/2]*9 = 99   h(10) (2+20)/2 *9= 
<gadget id="calculator">(2+20)/2 *9</gadget>
<output>99</output>
99   h(10)= (2+10)/2]*5 = 30   h(18)/h(10) (2+10)/2 *5= 
<gadget id="calculator">(2+10)/2 *5</gadget>
<output>30</output>
30   h(18)/h(10)= (99) / (30) ~ 3   Answer : 3
<result>E</result>
For all even integers n, h(n) is defined to be the sum of the even integers between 2 and n, inclusive. What is the value of h(20)/h(10) ?