Это слово definitions, относящееся к problem. Щелкните любое слово, чтобы перейти на страницу сведений о нем. Или, перейти к определению problem.
0 a situation that causes difficulties and that needs to be dealt with
1 a question that you use mathematics to solve
3 something that you say to mean you can or will do what someone has asked you to do