A két rajtszám azonos.

Hungarian often leaves out van/vannak (is/are) in the present tense, third person when one thing is being described as something.

So:

• A két rajtszám azonos. = The two race numbers are identical.

This is completely normal Hungarian.

Compare:

• A ház nagy. = The house is big.
• A lány fáradt. = The girl is tired.

In other tenses, the verb appears:

• A két rajtszám azonos volt. = The two race numbers were identical.

In Hungarian, a and az are the definite article, so they mean the.

• a is used before consonant sounds
• az is used before vowel sounds

So:

• a két rajtszám = the two race numbers

Hungarian does not have a separate word that looks like English the. Its definite article is simply a/az.

Both két and kettő mean two, but they are used a little differently.

Before a noun, Hungarian normally uses két:

• két rajtszám = two race numbers

When the number stands by itself, kettő is common:

• Hány rajtszám van? Kettő. = How many race numbers are there? Two.

So in this sentence, két is the expected form because it directly modifies rajtszám.

After a number, Hungarian normally uses the noun in the singular, not the plural.

So:

• két rajtszám = literally two race-number
• natural English translation: two race numbers

This is a very important difference from English.

More examples:

• három könyv = three books
• öt ember = five people
• két autó = two cars

So két rajtszám is exactly what Hungarian grammar expects.

Because a két rajtszám is a numeral phrase, Hungarian usually treats it with singular predicate agreement.

So:

• A két rajtszám azonos.

not:

• A két rajtszám azonosak.

This matches a broader pattern in Hungarian: with expressions like two X, three X, the predicate is often singular.

Compare:

• A fiúk magasak. = The boys are tall.
• A két fiú magas. = The two boys are tall.

This often feels strange to English speakers, but it is standard Hungarian usage.

Rajtszám is a compound noun:

• rajt = start (as in a race)
• szám = number

Together, rajtszám means something like:

• race number
• starting number
• bib number (in many sports contexts)

So it usually refers to the identifying number assigned to a competitor.

Azonos is an adjective meaning:

• identical
• the same
• matching

In this sentence it works as a predicate adjective:

• A két rajtszám azonos. = The two race numbers are identical.

It can also appear before a noun:

• azonos szám = an identical number
• azonos feltételek = identical conditions

Sometimes yes, but the nuance is a little different.

• azonos emphasizes identical / matching
• ugyanaz means the same one / the very same thing

So:

• A két rajtszám azonos. = The two race numbers are identical / the same.
• A két rajtszám ugyanaz. = The two race numbers are the same one.

In many situations, both are possible, but azonos can sound a bit more formal or technical.

Yes, Azonos a két rajtszám is also possible.

Hungarian word order is flexible and often reflects focus or topic-comment structure rather than rigid English-style order.

• A két rajtszám azonos.
  This is a neutral statement: As for the two race numbers, they are identical.

• Azonos a két rajtszám.
  This puts more attention on azonos: They are identical, the two race numbers.

The version you were given is a very natural neutral sentence.

A rough pronunciation guide is:

• A = short aw
• két = like kate but with a pure long é
• rajtszám ≈ right-saam
• azonos ≈ aw-zo-nosh

A more careful breakdown:

• rajt sounds almost like English right
• sz in Hungarian is pronounced like English s
• á is a long a sound
• final s in azonos is pronounced like English sh

So a rough English approximation is:

aw kate right-saam aw-zo-nosh

They are in the nominative form, with no special case ending.

• a két rajtszám = subject
• azonos = predicate adjective

There is no accusative, dative, or other case marking here. This is one reason the sentence looks quite compact.