Missing number in the series
4 9 20 43 90 ?
Choices.
A) 175	B) 185	C) 190	D) 195	E) 180
4*2+1= 
<gadget id="calculator">4*2+1</gadget>
<output>9</output>
9   9*2+2= 
<gadget id="calculator">9*2+2</gadget>
<output>20</output>
20   20*2+3= 
<gadget id="calculator">20*2+3</gadget>
<output>43</output>
43   43*2+4= 
<gadget id="calculator">43*2+4</gadget>
<output>90</output>
90   so 90*2+5= 
<gadget id="calculator">90*2+5</gadget>
<output>185</output>
185   ANSWER:185
<result>B</result>
Missing number in the series
4 9 20 43 90 ?