几道数学题[转自我看机经]

smart

7．31 Q：5* V：4* 7*0

记得不太清楚，望大家指正，仅供参考
Q：
1． Three intergers;m,n,q, their average is 10, median is m+6,what is the greatest number of Q?
My answer: 22
2. x2+y2?
(1)(x+y)(x+y)=436
（2）xy=39
My answer: C
3. a company want to hire three workers, what are the selections from six applicants greater than from five applicants?
My answer: 10
4. one coin, throw three times, , what is the possibility of the same side fall into the ground each time?
My answer::1/8*2=1/4