What will come in place of the x in the following Number series? 6, 12, 21, 33 , x
Choose one:
A) 33  B) 35  C) 39  D) 48  E) 42
The pattern is + 6, + 9, + 12, +15 â€¦â€¦â€¦..   So the missing term is = 33 + 15= 
<gadget id="calculator">33 + 15</gadget>
<output>48</output>
48   Answer : 48
<result>D</result>
What will come in place of the x in the following Number series? 6, 12, 21, 33 , x