AMERICAN FORK, Utah (AP) _ When computer science teacher Ernie Carey asked his class for the probability that his two daughters would go into labor and give birth on the same day, students said there was almost no chance.

When he threw in the possibility that a third daughter might also deliver on the same day, they laughed.

So much for probabilities. Carey's daughters beat one-in-50-million odds Wednesday, giving birth to two boys and a girl.

``He threw up his hands and said, `Number three is in labor, class dismissed,''' said Carey's wife, Lynn Carey.

The couple's oldest daughter, Karralee Morgan, 28, gave birth at 7:18 a.m. to her first child, Camaron Scott. A few hours later, sister Marrianne Asay, 27, also was admitted to American Fork Hospital. She gave birth to Dallin, her second child, at 3:25 p.m.

At 8:58 p.m., Jennifer Hone, 24, delivered Sera McKell, her second child, at Timpanogos Hospital in nearby Orem.

``We had joked about it, about us all being pregnant at the same time,'' Morgan said. ``We didn't really think it would happen like this.''

There's one more Carey sister, Noreen Macbean, who got married in January. She managed to attend all three deliveries and shoot video of each one.

The tight knit family plans to be even tighter in the future.

``We've already got the first birthday party planned,'' Asay said. ``We celebrate everything together already. This will just add more fun.''