What will come in place of the x in the following Number series? 1, 2, 4, 7, 12, 19, X	Choose the correct choice from the following answers.
A) 23
B) 30
C) 31
D) 41
E) 29
There is one series here   (the numbers are being increased by prime numbers 1, 2, 3, 5, 7, 11....)   1 + 1= 
<gadget id="calculator">1 + 1</gadget>
<output>2</output>
2   2 + 2= 
<gadget id="calculator">2 + 2</gadget>
<output>4</output>
4   4 + 3= 
<gadget id="calculator">4 + 3</gadget>
<output>7</output>
7   7 + 5= 
<gadget id="calculator">7 + 5</gadget>
<output>12</output>
12   12 + 7= 
<gadget id="calculator">12 + 7</gadget>
<output>19</output>
19   Hence 19 + 11= 
<gadget id="calculator">19 + 11</gadget>
<output>30</output>
30   The correct choice is 30
<result>B</result>
What will come in place of the x in the following Number series? 1, 2, 4, 7, 12, 19, X