题目

A mom in Australia was told by a doctor that her newborn son was “dead”，but she helped bring him back to life by holding the baby against her body.She used a method known as “kangaroo care”．The child，named Jamie，was born after only 27 weeks with his twin sister，Emily，at a hospital in Sydney.Her birth went well，but his was a different story.The doctor struggled for 20 minutes to save him before declaring him dead. “His little arms and legs were just falling down away from his body，” Kate Ogg said.“I took my coat off and put him on my chest with his head o1．用m，n分别表示将一枚质地均匀的正方体骰子（六个面的点数分别为1，2，3，4，5，6）先后抛掷两次时第一次、第二次的点数．（1）求关于x的方程x2+mx+n2=0有两个不等实根的概率；（2）求实数$\frac{m}{n}$不是整数的概率．