Civil Services Prep

Prelims 2026 · CSAT / Logical Reasoning · Question 44

P has a son and a daughter. S is the mother of T. S is R's spouse. Q and R are children of P. Then how is Q related to S?<br/>

  1. Q is a sister of S
  2. Q is a daughter of S
  3. Q is the mother of S
  4. Q is a sister of the husband of S

Answer

Q is a sister of the husband of S

Since S is the mother of T, S is female. S is R’s spouse, so in standard blood-relation puzzles R is taken as S’s husband. Q and R are the children of P, and P has one son and one daughter; thus R is the son and Q is the daughter. Therefore, Q is the sister of S’s husband.

  1. X receives three coins of different denominations : 1, 2, 5, 10 and 20. If the total amount received by X is…
  2. For two distinct real numbers x and y, which of them is bigger? Statement I : x^2 Statement II : y
  3. If x and y are integers, then is x even? Statement I : x^2 y^2 is even. Statement II : 1 + x^2 + y^2 is odd.
  4. X is a collection of certain odd numbers whereas Y is a collection of certain even numbers. T consists of the…
  5. If x, y and z are integers, each greater than 1, then is x a prime number? Statement I : xy^2 = 116 Statement…
  6. Which of the following conclusions are valid? 1. Seven Sanskriti Angans, representing different regions of…