1. **State the problem:** We have 15 daisies and want to check if we can arrange them in arrays with the given rows and daisies per row. 2. **Formula:** To form an array, the total daisies must equal rows \( \times \) daisies per row. 3. **Check each case:** - 1 row of 15 daisies: \(1 \times 15 = 15\) ✓ Yes - 2 rows of 7 daisies: \(2 \times 7 = 14\) ✗ No, 14 \(\neq\) 15 - 3 rows of 5 daisies: \(3 \times 5 = 15\) ✓ Yes - 5 rows of 3 daisies: \(5 \times 3 = 15\) ✓ Yes - 7 rows of 2 daisies: \(7 \times 2 = 14\) ✗ No, 14 \(\neq\) 15 - 15 rows of 1 daisy: \(15 \times 1 = 15\) ✓ Yes 4. **Conclusion:** Arrays possible are 1x15, 3x5, 5x3, and 15x1. Arrays 2x7 and 7x2 are not possible because they do not use all 15 daisies.