Explanation

For objects moving in opposite directions, relative speed = sum of their speeds.

50 + 100 = 150 km/hour.

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

Father’s current age = 72 − 6 = 66 years.

Son’s current age = 66 ÷ 6 = 11 years.

Last verified on 02-09-2026

Explanation

The HCF of 35 and 63 is 7.

Divide both terms by 7: 35 ÷ 7 : 63 ÷ 7 = 5 : 9.

Last verified on 02-09-2026

Explanation

HCF of 20 and 6 = 2.

Divide both by 2: 20 ÷ 2 : 6 ÷ 2 = 10 : 3.

Last verified 02-09-2026

Explanation

|3| = 3, |−3| = 3, and 2² = 4.

|−3²| = |−9| = 9 → 3 − 3 − 4 − 9 = −13.

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

Given: Father's age = 5 times daughter's age = 5x years

Sum of ages = 48 years

So, x + 5x = 48

6x = 48

x = 48 / 6

x = 8

Daughter's current age = 8 years

Last verified on 03-08-2026

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