Blood Relation Test and Formula with Example


For the blood-relation test, the following information is essential–

(1) Mother's sister – Maternal aunt
(2) Father's sister – Aunt
(3) Son of mother of father – Brother
(4) Daughter of mother of father – Sister



(5) Son of brother – Nephew
(6) Daughter of brother – Niece
(7) Wife of elder brother – Sister-in-law
(8) Husband of daughter – Son-in-law
(9) Wife of son – Daughter-in-law
(10) Sister of wife – Sister-in-law
(11) Brother of wife – Brother-in-law
(12) Father of father – Grand father
(13) Father of mother – Maternal grand father
(14) Mother of father – Grand mother
(15) Mother of mother – Maternal grand mother
(16) Brother of father – Uncle
(17) Brother of mother – Maternal uncle
(18) Son of father's brother – Cousin 
(19) Son of father's sister – Cousin
(20) Son of Mother's brother – Cousin
(21) Son of Mother's sister – Cousin
(22) Son of Maternal grand father – Maternal uncle
(23) The only daughter of Maternal grand father – Mother
(24) Wife of Mother's brother or wife of Maternal grand father's son – Maternal aunt
(25) The only son of grand father – Father
(26) Mother of wife – Mother-in-law
(27) Father of wife – Father-in-law
(28) The only daughter of Father-in-law or Mother-in-law – Wife
(29) Husband of sister – Brother-in-law
(30) Son of sister or brother-in-law – Nephew
(31) Daughter of sister of brother-in-law – Niece
(32) Son of daughter or son-in-law – Grand son
(33) Daughter of daughter of son-in-law – Grand daughter
(34) Son of Son or daughter-in-law – Grand son
(35) Daughter of son or daughter-in-law – Grand daughter
(36) Only daughter-in-law of Grand father – Mother
(37) Only daughter-in-law of father – Wife
(38) Husband of daughter-in-law – Son

Example (1)– A lady says to her husband introducing a man, "His brother's father is the only son of my maternal grand father." How is this lady related to the man?
(A) Mother (B) Aunt
(C) Sister (D) Daughter
(E) Maternal grand Mother
Solution (C)

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