A + B means ‘A is the father of B’;
A − B means ‘A is the sister of B’;
A × B means ‘A is the brother of B’;
A ÷ B means ‘A is the daughter of B’.
If, R + S × T − V ÷ U, then how is S related to U ?

Son

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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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