SOLUTION: a person got to know about a message, within 5 minutes he informed it to another 2 persons similarly each person who got to know about the message informed it to another 2 persons

Question 1068436: a person got to know about a message, within 5 minutes he informed it to another 2 persons similarly each person who got to know about the message informed it to another 2 persons. At 10.30 Am 729 people got to know about the message.at what time 1st person got to knew about the message?

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
If I read this right, every 5 minutes, the number
of people who get the message doubles.
At start time , person
,
,
,
,
It looks like, if is the number of 5 minute
intervals, then the number of people with the
message is
-------------------------
At 10:30 people got the message

and
minutes
------------------------------------
10:30 minus min is 10:00
That leaves min

also:
------------------------------------
The 1st person know the message at 9:47:27
----------------------------------------
DEFINITELY get another opinion on this.
I'm pretty much winging it here

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