10th Class Mental Ability Blood Relations Question Bank Blood Relations

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 X is a grandmother of Z?

A) \[\text{Z}+\text{X}-\text{Y}\]

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

C) \[\text{X}-\text{Y}-\text{Z}\]

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

Correct Answer: C

Solution :

\[\text{X}-\text{Y}\] Mean X is mother of Y and \[\text{Y}-\text{Z}\] means Y is mother of Z. i.e., X is the grandmother of Z.