A secret can be told only 2 persons in 5 minutes .the same person tells to 2 more persons and so on . How long will take to tell it to 768 persons ?
Choose the correct choice from the following options:	A) 25 min	B) 32 min	C) 33 min	D) 34 min	E) 35 min
at start one person will tell to 2 persons, it will take 5 min, now that  1+2= 
<gadget id="calculator"> 1+2</gadget>
<output>3</output>
3 persons will tell this to next 6 persons, then 1+2+6= 
<gadget id="calculator">1+2+6</gadget>
<output>9</output>
9 persons will tell to next 18 persons, then 1+2+6+18= 
<gadget id="calculator">1+2+6+18</gadget>
<output>27</output>
27 persons to 54 similarly   1+2+6+18+54= 
<gadget id="calculator">  1+2+6+18+54</gadget>
<output>81</output>
81 persons will tell this to 162 persons similarly  1+2+6+18+54+162= 
<gadget id="calculator"> 1+2+6+18+54+162</gadget>
<output>243</output>
243 persons will tell this to 486 persons, upto this step total persons who have listened this secret= 2+6+18+54+162+486= 
<gadget id="calculator">2+6+18+54+162+486</gadget>
<output>728</output>
728, and total time taken upto this step= 5*6= 
<gadget id="calculator">5*6</gadget>
<output>30</output>
30 min, now next 5 min will be sufficient to tell this message to next 40 persons so total time taken= 35 min   ANSW35 minR:35 min
<result>E</result>
A secret can be told only 2 persons in 5 minutes .the same person tells to 2 more persons and so on . How long will take to tell it to 768 persons ?