If P + Q means that P is the mother of Q, P ÷ Q means that P is the father of Q, P - Q means that P is the sister of Q, then which of the following expression shows that A is the maternal grandfather of C ?

A ÷ B + C

After checking all the options, we get the answer from option (iv):

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Please note:

  l   ⇒ Vertical line shown "generation gap".

 =  ⇒ Double lines shown "relation of spouse" 

—  ⇒ Horizontal line shown "relation in same generation other than spouse".

     ⇒ Rectangular box shown " Male".

     ⇒ Circular box shown " Female".

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