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36
Carefully arrange 12 rows with 8 coins in each row.
Two coins at each vertex.
Two ways only. 4 rows with 25 stamps each or 5 rows with 20 stamps each.
You are arranging 70 plants in a rectangular garden with the same number of plants in each row. How many ways can you arrange the garden
by 2 rows
19 plants in 9 row
in the form of a start
8 ways
30 * 10 = 300 total plants.
Contour plowing is plowing along the curves of a slopeand crop rotation is when a farmer plants different crops in a field each year........
120 different ways.
18
No.
They first plow their fields along the curves of a slope. Then they disturb the soil and its plant cover as little as possible. Last they the farmer plants different crops in a field each year.
Harvesting 189 potatoes from 9 plants means that each plant gives 189/9 or 21 potatoes. Therefore, 14 plants should give us 14 x 21 or 294 potatoes.