The formula for determining the number of ways to select two pairs of sneakers from three pairs labeled A, B, and C is represented by 3C2 (3 combinations of 2), which calculates as 3! / (2!(3 - 2)!) = 3! / (2! x 1!) = (3 x 2) / (2 x 1) = 3. Therefore, the sample space is S = {AB, AC, BC}.
Respuesta:
q>=2
Explicación detallada:
Si ha respondido 3 preguntas correctas de 7, solo necesita 2 correctas más. Para que tenga el 70% de 7, debe tener 5 o más. 5-3=2
