Gláucia possui 3 pulseiras, 4 pares de brincos e 2 cordões. Ela deseja escolher um conjunto formado por 1 pulseira, 1 par de brincos e 1 cordão para usar no casamento de sua irmã. Quantos conjuntos diferentes Gláucia pode formar utilizando essas pulseiras, brincos e cordões?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)