Un frasco contiene 3 mármoles rojos, 7 mármoles verdes y 10 mármoles blancos. Si se extrae un mármol del recipiente al azar, ¿cuál es la probabilidad de que este mármol sea blanco?

where is the figure

for a it would be 24 children.

for b i don't understand the question. is it saying for each individual person they pick 5 reds to 7 greens or is it the whole group. clarify and i hope this can you.

step-by-step explanation: