It takes five minutes to pass a rumor from one person to two other persons. The tree of rumor continues. Find how many minutes does it take spread the rumor to 768 persons.



It takes five minutes to pass a rumor from one person to two other persons. The tree of rumor contin..

Answer / Abhijit Burma

To find out how many minutes it takes for the rumor to reach 768 people, we can calculate the time by doubling the number of people each time and adding five minutes for each doubling. Starting with two people, we double the number six times: 2 (initial), 4, 8, 16, 32, 64, 128, 256, and 512 people. Adding up these doublings gives us a total of 1127 minutes. However, since the process starts with two people instead of one, we need to subtract five minutes from our result, leaving us with 1122 minutes.

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