SSC CGL 2025 Tier-I · 17 September 2025, Shift 3 · General Intelligence and Reasoning · Question 8 of 100

We transcribed this text from the pictures on a candidate's response sheet for this shift; the answer is the key SSC colour-marked on that sheet. Solution last reviewed 11 September 2026.

Where this paper and its answers come from

SSC does not publish CGL question papers or a public answer key. From 2025 the candidate response sheet prints every question and option as a picture, so the text here is transcribed from those pictures for this shift and checked against them independently; where the layout carries meaning, the picture is shown as well. Each answer is the key SSC colour-marked on that sheet. SSC released a tentative key for challenge and later its final one, both only to candidates behind a login, and the sheet does not say which of the two it carries. The solutions are written by UnlockIAS.

P is the son of Q. Q is the brother of R. R is the son of S. How is P related to S?

(a)Son
(b)Nephew
(c)Grandson
(d)Uncle

Answer

Why

Correct — C.
Rule: place each person by generation.

R is the son of S, and Q is R's brother, so Q is also S's son.
P is the son of Q, one generation below Q.
So P is the son of S's son: S's grandson → option (c).

Why the others are wrong

(a)
Son — Son skips a generation. P's father is Q, and Q is S's son, so S is P's grandfather, not his father.
(b)
Nephew — Nephew is P's relation to R, his father's brother. S sits one generation above R, so P is S's grandson.
(d)
Uncle — Uncle would put P above S. P is two generations below S; it is R who is P's uncle.

Concept

Blood-relation chains are solved by fixing each person's generation. Put S at the top, S's sons Q and R one level below, and P, Q's son, one more level down.

A brother shares his sibling's parents, and that step brings Q under S. Two levels down through a son is a grandson.

The question never says Q is S's son directly. You get it by combining Q is the brother of R with R is the son of S.

Key facts

A person's brother has the same parents, so R's brother Q is also S's son.
A son's son is a grandson.
P is R's nephew, since R is the brother of P's father.

Study next

Blood relations stated as pointing puzzlesCoded blood relations, where symbols stand for son, brother or wifeDrawing a family tree with one row per generation

Common traps

Stopping one generation short and choosing Son
Answering P's relation to R, nephew, instead of to S

19 Sep 2025, 09:00, Reasoning Q.10 runs the same two-step descent: A is the only daughter of B, who is the only son of C, so A is C's granddaughter.

18 Sep 2025, 12:30, Reasoning Q.22 uses the sibling step: P is the brother of Q, R is the sister of Q and S is the father of P, so R is S's daughter.

Related PYQs

No directly related past PYQ was found.

Topic: Problem Solving — all 74 SSC CGL questions on it, every solved shift.