If M \# N means 'M is the daughter of N', M \ N means 'M is the brother of N', M \% N mean… — State PSC Exam

If $M \# N$ means ' $M$ is the daughter of $N$ ', $M \$ N$ means ' $M$ is the brother of $N$ ', $M \% N$ means ' $M$ is the mother of $N$ ', and $M @ N$ means ' $M$ is the husband of $N$ ', then in the expression $J \# K @ L \% M \$ N$ , how is $N$ related to $J$ ?

Either brother or sisterAnswer
B
Brother
C
Sister
D
Cousin

Answer

Either brother or sister

Breaking down the expression shows that

J

M

, and

N

share the same parents (

K

and

L

J

is their daughter, and

M

is their son. The symbol sequence

M \$ N

establishes that

M

is the brother of

N

, which confirms

N

is a sibling to

J

. However, because no symbol defines the gender of

N

N

could be male or female, making the exact relationship either brother or sister.

Step-by-Step Solution

Decode the sub-expression

M \$ N

M

is the brother of

N

. This implies

M

is male, but the gender of

N

is not specified.

The relation '

M

is the brother of

N

' defines the gender of

M

, not

N

Decode

L \% M \$ N

L

is the mother of

M

(and therefore also the mother of

N

L \% M

means

L

is the mother of

M

, who is sibling to

N

Decode

K @ L

K

is the husband of

L

, which makes

K

the father of

M

and

N

K @ L

means

K

and

L

are husband and wife.

Decode

J \# K

J

is the daughter of

K

(and

L

J \# K

means

J

is the daughter of

K

Determine the relationship between

N

and

J

Since

J

M

, and

N

are all children of the same parents (

K

and

L

N

is a sibling to

J

. As

N

's gender is unknown,

N

is either the brother or sister of

J

Gender cannot be assumed without an explicit defining symbol.

Key Concept

Coded blood relations and gender determination rules

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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