Translation:Do you know all the numbers, Mohamed?
Technically there are ten ارقام, from zero to nine, with which you can write any عدد. So properly رقم would be "digit" and عدد would be "number" or "figure". In practice, however, many people use عدد ورقم indistinctly. Also, رقم is very rich in meanings, the most important being "symbol".