Explanation

No honest person is corrupt means no person can be both honest and corrupt.

Some politicians are corrupt means at least some politicians are corrupt.

Therefore, those corrupt politicians cannot be honest.

Hence, some politicians are not honest logically follows.

Last verified on 04-09-2026

Explanation

• The statement says access is conditional upon successful cryptographic authentication.
• Therefore, successful authentication is the necessary condition for access.
• The given information directly supports the conclusion that successful cryptographic authentication occurred.

Last verified on 04-09-2026

Explanation

From the given information:

1. A reaches before B → A < B

2. B reaches before D → B < D  

3. C reaches before D → C < D

Combine 1 and 2: A < B < D  

Combine with 3: C < D

So D is after both B and C. That means D cannot be last because someone is definitely behind D? Wait no — "last" means finishes after everyone.

From A < B < D, D is after A and B.  

From C < D, D is after C too.

So D finishes after A, B, and C.  

Therefore D certainly finishes last.

Last verified on 03-09-2026

Explanation

A comes before B.

B comes before D, and C also comes before D.

Therefore, D must be the last to reach.

Last verified on 02-09-2026

Explanation

The statement “Doctors are not illiterate” means all doctors are literate.

Sana is illiterate.

Therefore, Sana cannot be a doctor.

Last verified on 02-09-2026