In a second grade class containing 15 girls and 9 boys, 2 students are selected at random to give out the math papers. What is the probability that both are girls? Select one:
Solución de inteligencia artificial de Upstudy
Responder
Solución

¡Inicia sesión para desbloquear respuestas gratis!
Una plataforma de aprendizaje en la que confían millones de estudiantes y profesores reales.

Respondido por UpStudy AI y revisado por un tutor profesional
Beyond the Answer
To find the probability of choosing 2 girls from the class, first, you calculate the total number of students, which is 15 girls + 9 boys = 24 students. Next, the number of ways to choose 2 girls from 15 is given by combinations, calculated as C(15, 2) = 15! / (2!(15-2)!) = 105. The total number of ways to choose 2 students from 24 is C(24, 2) = 24! / (2!(24-2)!) = 276. Thus, the probability that both selected students are girls is 105 / 276, which simplifies to 35 / 92. So, the answer is 35/92.
