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Question

A # B means 'A is the brother of B'.

A @ B means 'A is the son of B'.

A & B means 'A is the father of B'.

A % B means 'A is the mother of B'.

If W # Q @ T & Y @ M % K % L, then how is K related to W?

This question was previously asked in
SSC CGL 2022 Tier-II (Paper 2 JSO) Previous Year Paper (04-Mar-2023)
The correct answer is

Sister

Understanding Blood Relation Symbols

In blood relation puzzles, specific symbols are used to represent relationships. Understanding these symbols is the first step to solving the problem. Let's look at the symbols provided:

  • # means 'A is the brother of B'
  • @ means 'A is the son of B'
  • & means 'A is the father of B'
  • % means 'A is the mother of B'

Decoding the Blood Relation Expression

The given expression is W # Q @ T & Y @ M % K % L. We need to break this down segment by segment to build the family tree or understand the connections between individuals.

Segment Relationship Inference (Gender/Connection)
W # Q W is the brother of Q W is male. W and Q are siblings.
Q @ T Q is the son of T Q is male. T is the parent of Q.
T & Y T is the father of Y T is male. T is the parent of Y.
Y @ M Y is the son of M Y is male. M is the parent of Y.
M % K M is the mother of K M is female. M is the parent of K.
K % L K is the mother of L K is female. K is the parent of L.

Building the Family Connections

Now, let's combine the inferences:

  • W is the brother of Q. (W is male)
  • Q is the son of T. Since W is Q's brother, W is also the son of T. (W, Q are children of T. T is male)
  • T is the father of Y. Since W and Q are sons of T, and T is also the father of Y, W, Q, and Y must be siblings. (W, Q, Y are children of T. T is male, W is male, Q is male)
  • Y is the son of M. We already know T is the father of Y. If T is the father and M is the mother of the same person (Y), then T and M are likely spouses. (T is male, M is female. T and M are parents of Y).
  • If T and M are parents of Y, and T is the father of W and Q, then M must also be the mother of W and Q (assuming T and M are a couple with these children). So, W, Q, and Y are children of both T and M. (W, Q, Y are siblings. Parents are T (male) and M (female). W, Q, Y are all male from the given expressions).
  • M is the mother of K. This means K is a child of M. Since W, Q, and Y are also children of M, K is a sibling of W, Q, and Y.
  • K is the mother of L. This tells us K is female.

Determining the Relationship between K and W

From the combined connections, we know:

  • W is a child of M.
  • K is a child of M.
  • Therefore, W and K are siblings, sharing M as a parent.
  • W is identified as male (W # Q implies W is a brother).
  • K is identified as female (K % L implies K is a mother).

Since W and K are siblings and K is female, K is the sister of W.

Revision Table: Key Symbols and Meanings

Symbol Meaning Example (A [Symbol] B)
# Brother A is the brother of B
@ Son A is the son of B
& Father A is the father of B
% Mother A is the mother of B

Additional Information on Blood Relation Puzzles

Blood relation questions test your ability to decipher coded relationships and build a family structure. Key strategies include:

  • Break down complex expressions into smaller parts.
  • Identify the gender of individuals whenever possible based on the relationship symbol (e.g., brother implies male, mother implies female).
  • Connect the segments to form a complete family tree or relationship chain.
  • Work from both ends of the expression if helpful.
  • Be careful with gender. Some relations (like sibling, child, parent) don't specify gender unless another symbol or part of the expression clarifies it.
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Important Questions from Miscellaneous

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