question_answer

                           

Direction: Read the information carefully and answer the following questions:

\[A\,\Delta \,B\]means A is mother of B

Ameans A is brother of B

A means A is husband of B

\[A||B\]means A is father of B

\[\,A\sum B\]means A is daughter of B

What should come in place of question mark in the given expression to establish that S is Grandfather of T? \[S\parallel P\]R Q? T

A)                               

B) \[||\]

C) \[\Delta \]                      

D) Either\[\Delta \]or \[||\]  

E) Either  or \[||\]

Correct Answer: C

Solution :

            We put \['\Delta '\]in place of question mark. S is grandfather of T.