Based on the following coded family relationship definitions: - P + Q means 'P is the fath… — State PSC Exam

Based on the following coded family relationship definitions:
- $P + Q$ means ' $P$ is the father of $Q$ '
- $P \times Q$ means ' $P$ is the mother of $Q$ '
- $P - Q$ means ' $P$ is the sister of $Q$ '
- $P \div Q$ means ' $P$ is the brother of $Q$ '

Consider the expression: $D + A - E \times F \div C - B$ , where $B$ is a male.

Match each individual on the left with their precise relationship to $B$ on the right.

$D$ Maternal Grandfather
$E$ Mother
$A$ Maternal Aunt
$F$ Brother

Answer

The correct pairings are: D is the Maternal Grandfather of B, E is the Mother of B, A is the Maternal Aunt of B, and F is the Brother of B.

By systematically breaking down the expression

D + A - E \times F \div C - B

E

is the mother of

B

F

B

's brother,

A

E

's sister (maternal aunt to

B

), and

D

is the father of

E

(maternal grandfather to

B

Step-by-Step Solution

Decode the core sibling chain involving B

E \times F \div C - B

expands to:

E

is mother of

F

;

F

is brother of

C

;

C

is sister of

B

. This establishes that

E

is the mother of all three siblings (

F, C, B

), making

E

the Mother of

B

and

F

the Brother of

B

Establishing the direct parentage and sibling generation is essential before determining extended relationships.

Analyze the maternal line extended to A

A - E

indicates

A

is the sister of

E

. Since

E

is the mother of

B

A

is the sister of

B

's mother, making

A

the Maternal Aunt of

B

A mother's sister is by definition a maternal aunt.

Determine the relation of D to B

D + A

means

D

is the father of

A

. Because

A

and

E

are sisters,

D

is also the father of

E

. Since

E

B

's mother,

D

is the father of

B

's mother, making

D

the Maternal Grandfather of

B

A mother's father is specifically the maternal grandfather.

Key Concept

Coded blood relation decoding and multi-generational tree tracking

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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