aryansodhi35 aryansodhi35
  • 23-09-2022
  • Mathematics
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A telephone tree is used to send messages. The person at the top calls 2 people. Each person calls 2 more people. Suppose it takes 1 min to call someone. A message is relayed until the bottom row of the tree has 256 people. How long did this take? How do you know?

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