for all even integers n, h ( n ) is defined to be the sum of the even integers between 4 and n, inclusive. what is the value of h ( 18 ) / h ( 10 )?	Choices:
A) 3
B) 1.8
C) 6
D) 18
E) 60
<gadget id="calculator">18 + 4</gadget>
<output>22</output>

<gadget id="calculator">18 - 4</gadget>
<output>14</output>

<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<gadget id="calculator">7 + 1</gadget>
<output>8</output>

<gadget id="calculator">22 * 8</gadget>
<output>176</output>

<gadget id="calculator">176 / 2</gadget>
<output>88</output>

<gadget id="calculator">10 - 4</gadget>
<output>6</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">4 + 10</gadget>
<output>14</output>

<gadget id="calculator">4 * 14</gadget>
<output>56</output>

<gadget id="calculator">56 / 2</gadget>
<output>28</output>

<gadget id="calculator">88 / 28</gadget>
<output>22/7 = around 3.142857</output>

<result>A</result>
for all even integers n, h ( n ) is defined to be the sum of the even integers between 4 and n, inclusive. what is the value of h ( 18 ) / h ( 10 )?
divide(divide(multiply(add(18, 4), add(divide(subtract(18, 4), const_2), const_1)), const_2), divide(multiply(add(divide(subtract(10, 4), const_2), const_1), add(4, 10)), const_2))
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 ( 18 ) = [ ( 4 + 18 ) / 2 ] * 8 = 88 h ( 10 ) = ( 4 + 10 ) / 2 ] * 4 = 28 h ( 18 ) / h ( 10 ) = ( 88 ) / ( 28 ) ~ 3 answer : a