Mathematics, 03.09.2020 01:01 duke4527

In round one of phone tree, a person calls 4 people. In round 2, each person in round one calls 4 more people, and so on. How many calls will be made in round 5

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In round one of phone tree, a person calls 4 people. In round 2, each person in round one calls 4 mo...

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