emilydunt emilydunt
  • 07-04-2020
  • Mathematics
contestada

What are the next three triangular numbers, 1, 3, 6, 10

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TheBrainLearner
TheBrainLearner TheBrainLearner
  • 07-04-2020
It’s 15, 21, 28 because it’s going up 1,2,3 etc and adding one each time it goes up
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