Reasoning

Correct answer: C

I is incorrect: K is L's wife and L is M's brother; K's relation to M → Sister-in-law. K is married to M's sibling. II is correct: A person faces north and turns right twice; final direction → South. Two right-angle turns reverse the starting direction.

Correct answer: C

A is the mother of C's father.

Correct answer: D

I is incorrect: P is Q's husband and Q is R's daughter; P's relation to R → Son-in-law. P is the spouse of R's daughter. II is incorrect: A person walks 4 km east then 3 km north; straight-line distance from the start → 5 km. The legs form a 3-4-5 right triangle.

Correct answer: B

A half-turn reverses south to north.

Correct answer: D

I is incorrect: J is K's mother and L is J's mother; L's relation to K → Maternal grandmother. L is the mother of K's mother. II is correct: Town P is north of Q and Q north of R; direction of P from R → North. Both displacements point north.

Correct answer: A

Both southerly and westerly components remain.

Correct answer: D

I is incorrect: A is B's mother and B is C's father; A's relation to C → Paternal grandmother. A is the mother of C's father. II is correct: A person faces north and turns right twice; final direction → South. Two right-angle turns reverse the starting direction.

Correct answer: C

The north and south movements cancel.

Correct answer: D

I is incorrect: F is G's son and G is H's sister; F's relation to H → Nephew. F is a male child of H's sibling. II is correct: A person facing south turns 180 degrees; final direction → North. A half-turn reverses south to north.

Correct answer: A

Two right-angle turns reverse the starting direction.

Correct answer: A

I is incorrect: A person faces east and turns 270 degrees clockwise; final direction → North. East→south→west→north is a 270-degree clockwise turn. II is incorrect: J is K's mother and L is J's mother; L's relation to K → Maternal grandmother. L is the mother of K's mother.

Correct answer: D

Each term is twice the preceding term.

Correct answer: D

The increments are 2, 4, 6 and then 8.

Correct answer: B

This is the contrapositive of the given conditional.

Correct answer: C

Only the first statement is guaranteed. Red flowers need not be roses.

Correct answer: B

Verification is a necessary condition for issuance in the stated rule.

Correct answer: A

The stated sufficient condition is met.

Correct answer: B

Authorised operation requires training under the rule.

Correct answer: C

Membership in Box A is sufficient to establish that P is signed.

Correct answer: D

The left-of relationship is transitive; adjacency is not specified.

Correct answer: B

The missing necessary condition rules out completion.

Correct answer: C

The teachers who are writers are also readers.

Correct answer: B

A magnetic token cannot belong to the excluded wooden group.

Correct answer: C

I is incorrect: Some inspectors on the list are engineers. No engineer on the list is absent. → Some inspectors on the list are present. The inspectors who are listed engineers cannot be absent. II is incorrect: All certified trainees passed. Mina did not pass. → Mina is not a certified trainee. Failure to pass excludes membership in the certified group.

Correct answer: B

Registration is a necessary condition for permitted entry.