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 ?
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Answer Posted / crazyfantaxy
i don't understand, why are you ppl not counting the ppl who
have been told the secret before
5 min-2
10-4, total so far=6
15-8, total so far=14
20-16, tsf=30
25-32, tsf=62
30-64, tsf=126
35-128, tsf=254
40-256, tsf=510
45-512, tsf=1022
---------------
50-1024, tsf=xyz
clearly ans should lie between 40 & 45...the options
definitely do not include the correct one!
you can also solve it by using binary tree + GP + log and
find the ans to be around 43
| Is This Answer Correct ? | 12 Yes | 13 No |
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