Questions & Answers about رقم الحافلة واحد.
Why isn't there an "al-" (the) attached to رقم (number) if the translation says "the bus number"?
This is a common Arabic structure called an Idafa (a possessive phrase). It literally translates to "the number of the bus." In this structure, the first word (رقم) never takes "al-" (the), but it is still understood as definite because the second word (الحافلة) has it.
Where is the word for "is" in this sentence?
Arabic does not use a word for "is" or "are" in the present tense. You simply state the subject, رقم الحافلة (the bus number), followed directly by the information you are giving about it, واحد (one).
The word for bus (الحافلة) is feminine. Why is the number واحد (one) in its masculine form?
The number here is describing the word رقم (number), which is masculine, not the bus! Additionally, when using numbers as bare labels or digits (like a bus route or phone number), you use their default counting forms. For 1, the default bare counting form is the masculine واحد.
Could I use the word رقم to say "I saw a number of buses"?
No, رقم refers specifically to a digit, numeral, or an identifying label (like a bus route, room number, or phone number). If you want to talk about a quantity or amount of something, Arabic uses a different word: عدد.