What is the mode of the following set of numbers: (18, 20, 20, 20, 21, 23, 23, 25, 28, 28)? a. 18 b. 20 c. 23

A moda do conjunto de números (18, 20, 20, 20, 21, 23, 23, 25, 28, 28) é 20. Portanto, a alternativa correta é a letra B.