Ingen kan jukse.

Ingen means no one / nobody in this sentence.

So Ingen kan jukse means No one can cheat or Nobody can cheat.

A useful thing to remember is that ingen can also mean no / none in other contexts, depending on what it refers to.

Examples:

• Ingen kom. = Nobody came.
• Jeg har ingen penger. = I have no money.

In your sentence, ingen stands alone as the subject, so it means no one.

Norwegian main clauses usually follow the V2 rule (verb second), which means the finite verb comes in the second position.

In Ingen kan jukse:

• Ingen = subject
• kan = finite verb
• jukse = main verb

So the structure is:

• Subject + finite verb + infinitive

This is completely normal Norwegian word order.

Kan is the present tense of kunne, and here it means can / is able to.

So:

• kan = can
• kunne = to be able to / can (dictionary form)

Examples:

• Jeg kan svømme. = I can swim.
• Hun kan ikke komme. = She cannot come.

In Ingen kan jukse, kan shows ability or possibility.

Because after a modal verb like kan, Norwegian normally uses the bare infinitive—that is, the infinitive without å.

So:

• kan jukse = can cheat not
• kan å jukse ✗

This is similar to English:

• can cheat not
• can to cheat

Other modal verbs work the same way:

• må gå = must go
• vil spise = want to eat / will eat
• skal dra = will / shall leave

Yes. Jukse is the infinitive form, meaning to cheat.

Its forms are:

• å jukse = to cheat
• jukser = cheats / is cheating
• jukset = cheated / has cheated

In your sentence, it appears after kan, so it stays in the bare infinitive form:

• Ingen kan jukse.

Often yes, but it most commonly means cheat in the sense of:

• cheating on a test
• cheating in a game
• breaking rules unfairly

Examples:

• Han jukset på prøven. = He cheated on the test.
• Du kan ikke jukse i dette spillet. = You can't cheat in this game.

Depending on context, English cheat can also mean things like be unfaithful, and Norwegian may use other expressions for that. So jukse overlaps a lot with English cheat, but not always perfectly in every context.

In sentences like this, ingen behaves grammatically like a singular subject, so the verb is singular:

• Ingen kan jukse.

Norwegian present-tense verbs do not change much by person or number anyway, so kan is the same form no matter who the subject is:

• Jeg kan
• du kan
• han kan
• vi kan
• ingen kan

So you do not need to worry about a special plural verb form here.

Normally, no—Ingen kan ikke jukse is not the natural way to say it.

That creates a kind of double negative problem. Since ingen already means no one, you usually do not add ikke unless you are saying something very specific and contrastive.

Natural forms are:

• Ingen kan jukse. = No one can cheat.
• Noen kan ikke jukse. = Some people cannot cheat.
• Ikke alle kan jukse. = Not everyone can cheat.

So if the idea is simply nobody can cheat, Ingen kan jukse is already complete.

A simple learner-friendly approximation is:

ING-en kan YOOK-seh

A few notes:

• ingen sounds roughly like ING-en
• kan is like kahn
• jukse begins with a y-like sound, not an English j sound

So jukse is closer to:

• YOOK-seh not
• JOOK-seh

Exact pronunciation varies a bit by dialect, but that approximation will help.

Not usually if you mean cheat in the sense of breaking rules in a game, test, or competition.

• jukse = cheat, fudge, break rules unfairly
• bedra often means deceive or, in some contexts, commit fraud or be unfaithful

So:

• Ingen kan jukse. = No one can cheat.
  is the natural choice for games, exams, rules, and similar situations.

It can be either, depending on context.

It might mean a general truth:

• Ingen kan jukse i lengden. = No one can cheat in the long run.

Or it can refer to a specific situation:

• In a secure online test system: Ingen kan jukse. = No one can cheat.

Without context, it sounds like a broad statement: Nobody can cheat.