question_answer

Directions: Use the relationships defined below to solve questions.

(i) \['\text{P}\times \text{Q}'\]means 'P is the father of Q'.

(ii) \['\text{P}*\text{Q}'\] means 'P is the sister of Q'.

(iii) \['\text{P}+\text{Q}'\] means 'P is the brother of Q'.

(iv) \['\text{P}-\text{Q}'\] means 'P is the mother of Q'.

(v) \['\text{P}\div \text{Q}'\] means 'P is the son of Q'.

(vi) \['\text{P}=\text{Q}'\] means 'P is the daughter of Q'.

Which of the following means Y is the mother of X and Z?

A) \[\text{X}+\text{Y}\text{Z}\]     

B)        \[\text{Y}-\text{X}\div \text{Z}\]

C) \[\text{Y}-\text{X}+\text{Z}\]   

D)        \[\text{Y}-\text{X}\times \text{Z}\]

Correct Answer: C

Solution :

\[\text{Y}-\text{X}\] means Y is mother of X and Y is also the mother of Z as X + Z means x is son of Z. i.e., X is sister or brother of Z.