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Mathematics, 24.08.2019 11:30 klmklm3799

Ann made a 3 -step staircase using 18 toothpicks as shown in the figure. how many toothpicks does she need to add to complete a 5 -step staircase?

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Ann made a 3 -step staircase using 18 toothpicks as shown in the figure. how many toothpicks does sh...

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