Read the following coded blood relation definitions: - A \div B means 'A is the father of … — State PSC Exam

Read the following coded blood relation definitions:
- $A \div B$ means ' $A$ is the father of $B$ '
- $A \times B$ means ' $A$ is the sister of $B$ '
- $A + B$ means ' $A$ is the son of $B$ '

Based on the expression $P \div Q \times R$ , how is $R$ related to $P$ ?

A
Son
B
Daughter
C
Father
Either Son or DaughterAnswer

Answer

Either Son or Daughter

Analyzing

P \div Q \times R

P \div Q

means

P

is the father of

Q

Q \times R

means

Q

is the sister of

R

. This makes

Q

and

R

siblings sharing the father

P

. Therefore,

R

is the child of

P

. However, no relationship code in the expression establishes the gender of

R

. As a result,

R

can be either a son or a daughter of

P

Step-by-Step Solution

Decode the first relation

P \div Q

P

is the father of

Q

The division symbol defines the first person as the father of the second person.

Decode the second relation

Q \times R

Q

is the sister of

R

The multiplication symbol defines the first person as the sister of the second person.

Combine the relations to establish the lineage between

P

and

R

P

is the father of both

Q

and

R

P

is the father of

Q

, and

Q

and

R

are siblings, then

P

must also be the father of

R

Determine the gender of

R

The gender of

R

is unstated; thus

R

is either a son or a daughter.

The code

Q \times R

tells us

Q

is female, but does not provide gender information for

R

Key Concept

Gender ambiguity in coded blood relations

Estimated Time:45s

Question

Answer

Step-by-Step Solution

Key Concept

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