题目：有5个人坐在一起，问第五个人多少岁？他说比第4个人大2岁。问第4个人岁数，他说比第

　　　3个人大2岁。问第三个人，又说比第2人大两岁。问第2个人，说比第一个人大两岁。最后

　　　问第一个人，他说是10岁。请问第五个人多大？-Title: 5 people sit together, and asked the fifth person how old? He said the 2-year-old than 4 people. Ask individuals age 4, he said that more than 3 people 2 years older. Asked a third person, and that more than 2 National People' s Congress two years old. Asked the second person to say than the first person two years older. Finally, ask the first person, he is 10 years old. I would like to ask how much the fifth person?