number vs problem in Korean

번호vs문제

number

번호number

The word "number" means a numeral or a set of digits used to identify something. In Korean, 번호 often means a phone number, seat number, bus number, or student number. You use it when you ask for or tell the number of something in everyday life. At school, it can also mean your class number or student number.

When to use number
problem

문제problem

문제 means a problem. In school, it often means a question or exercise in a workbook, homework, or a test. You can also use it for a difficulty in daily life, like a problem with a computer or a ticket.

When to use problem

How they differ

번호 is a number, like a student number, phone number, or the number of a test item. It does not mean the question or problem itself.