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1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
1,9,36,84,126,126,84,36,9,1
Sparky had room for 16 rows in his garden He planted 3 rows of tomatoes for every 5 rows of onions He planted 10 rows of onions.
Having the same number of students in each row, 80 students can be arranged in 80 rows of 1, 40 rows of 2, 20 rows of 4, 10 rows of 8, and 5 rows of 16.
3.5
Triangle numbers or triangular numbers are those numbers that can form an equilateral triangle when counting the objects. The first five triangular numbers are: 1, 3, 6, 10, 15.
Plant them in the shape of a star. The way the five lines (rows) overlap, you only need 10 total.