have difficulty ,trouble ,problems

I have some problems/difficulty/trouble to work out the prob 英语：have trouble/problems/difficulty加动词ing还是to do还是done have difficulty in doing sth .have trouble in doing sth Do you have difficulty s_ these maths problems? When you have difficulty _____(solve) the problems,please as Those have difficulty in working out the maths problems can have problems doing sth与 have trouble doing sth difficulty problem trouble区别 have problems/trouble doing sth有什么区别 have trouble doing 和have problem doing 和have difficulty doin have trouble doing和have difficulty in doing有区别吗? difficulty,trouble可不可数啊?