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A train left a station at noon going at 40 mph. A second train left at 3 p.m. going in the same direction at 60 mph. At what time will the second train catch up with the first?
answered
Feb 16, 2018
Mathematics
college
6
votes
232k
views
For a game, three people are chosen in the first round. Each of those three people chooses 3 people in the second round. How many are chosen the sixth round.
answered
Jan 11, 2017
Mathematics
middle-school
3
votes
22.4k
views
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