Question

英语数学题

1.there are 90 people in a group ,and among then at least one tells lie.if there is at least one telling truth between two people at random of these people, then do you know how many people are telling truth and how many people are telling lies？
2.jim has three children.a and b are 3 years apart ,and b and c are 2 years apart.a is not jim's eldest son. how many possible orders of age of jim's children.write down these orders .

Answer 1

1 90个人至少一人说谎，随机随机抽取两人至少一人讲真话。问几人说谎几人没说谎 答：1人说谎
2 jim有3个孩子 甲和乙相差3岁 乙和丙相差2岁，甲不是jim最大的儿子，问jim的孩子的年龄大小顺序有几种可能？哪几种？一种可能 乙 大于丙大于 甲

Answer 2

1.30telling truth, 60 telling lies

2. b a c
c a b
b c a
c b a