Mathematics, 26.11.2019 23:31 slaybyely

This diagram shows part of a design made by using toothpicks to form triangles. the top level uses 3 toothpicks. the second level uses 6 toothpicks. the third level uses 9 toothpicks, and so on. if you decide to continue the design so that it has 7 levels, how many toothpicks do you need altogether

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This diagram shows part of a design made by using toothpicks to form triangles. the top level uses 3...

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