Multiple choice

In how many different ways can 40 dots be arranged to form rectangles of different dimensions?

  1. 2

  2. 3

  3. 4

  4. 5
Reveal answer Fill a bubble to check yourself
B Correct answer
AI explanation

To form a rectangle using exactly 40 dots, the dots must be arranged into a grid of rows and columns whose product is 40. The only possible arrangements of 40 dots into distinct rectangular grids are 1 by 40, 2 by 20, and 4 by 10. Therefore, there are 3 different possible dimensions.

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