law: Hindu Succession Act, 1956
  13. Computation of degrees
  (1) For the purposes of determining the order of succession
  
  among agnates or cognates, relationship shall be reckoned from the intestate to
  
  the heir in terms of degrees of ascent or degrees of descent or both, as the
  
  case may be.
  (2) Degrees of ascent and degrees of descent shall be computed
  
  inclusive of the intestate.
  (3) Every generation constitutes a degree either ascending or
  
  descending.