A + B means ‘B is the daughter of A’;
A - B means ‘B is the sister of A’;
A × B means ‘B is the husband of A’;
A ÷ B means ‘A is the father of B’.
If, P ÷ R × T + Q - S × U + Z, then how is R related to Z?

Maternal grandmother

ATQ,

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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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