Explanation

• The person moves 15 km north, then 10 km west, then 15 km south.
• The north and south movements cancel out, leaving 10 km west.

Last verified on 01-09-2026

Explanation

Let's place them one by one:

1. Lahore is not to the East of Karachi

   So Lahore is West / North-West / South-West of Karachi.

2. Islamabad is to the North of Lahore 

   So Islamabad is directly North of Lahore.

3. Peshawar is to the West of Islamabad 

   So Peshawar is West of Islamabad.

Now combine:  

Karachi → Lahore is somewhere West.  

Lahore → Islamabad is North.  

Islamabad → Peshawar is West.  

So from Karachi, go West to Lahore area, then North to Islamabad, then West again to Peshawar.

That puts Peshawar to the North-West of Karachi.

Last verified on 02-09-2026

Explanation

The contrapositive of “If P, then Q” is “If not Q, then not P.”

A statement and its contrapositive are logically equivalent.

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

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

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

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

Engineers ⟶ Graduates

Graduates ⟶ Educated persons

Therefore, Engineers ⟶ Educated persons.

Last verified on 06-09-2026

Explanation

A route-removal strategy eliminates selected traffic movements to reduce congestion.

The most direct sign of effectiveness is lower traffic density at major intersections.

Increased congestion or longer travel times would indicate the intervention is ineffective.

Last verified on 06-09-2026

Explanation

• Fossils from different rock layers provide evidence of changes in organisms over geological time.
• These changes support the concept of evolution.
• Therefore, the most logical conclusion is that species change over time.

Last verified on 06-09-2026