# <span lang="EN-US

Given, 1521 trees are planted in a garden. We need to find out number of rows and number of trees.

Let us assume the number of trees in each row = x.

Since, we know that number of trees in each row = number of rows in the garden.

Total number of trees planted in a garden = x × x = x2

Calculate x value.

x2 = 1521

Calculate, prime factors for 1521.

We know from pairing the factors

x2 = (3 × 3) × (13 × 13)

x2 = 3 × 13

X = 39

Hence, the number of trees in each row is 39 and number of rows in the garden is also 39.

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