In a family of six persons—Abhay, Banta, Cathy, Deepak, Emily and Fatima, there are three males and three females. There are two married couples and two persons are unmarried. Each one of them likes different cold drinks. Emily who likes Coke, is the mother-in-law of Abhay, who is the wife of Cathy. Deepak is the father of Fatima and he does not like Thumps Up or Pepsi; Banta likes Limca and is the sister of Fatima who likes Sprite. Cathy does not like Pepsi. Fanta is another cold drink.
Solution:
While solving logical reasoning questions, always try to place the direct information first and keep any indirect clues aside for later use.
In this question you will find that:
Emily likes Coke ...........→ Direct clue
Deepak is the father of Fatima → Direct clue
Deepak does not like Thumsup or Pepsi → Indirect clue,…. and so on.
Keep in mind the following points while solving all questions on logical reasoning:
1. First use the direct clues.
2. In the case of a family tree the diagram should essentially be a multilevel diagram to ensure clarity of being able to see multiple generations on the same diagram.
3. Males and females should be marked separately with some symbols. One suggestion is the females can be marked inside a circle/bracket or with an underlined letter as A or alternately males can be marked with a + sign and females with a – sign.
4. Relationships should be marked using horizontal links or vertical links.
The following diagrams will emerge from the clues
At this stage, you know that A, B and E are the three females and C, D and F are the three males; you also know that A and C are one of the two couples.
Hence, the other couple must be D and E. (They must be married to each other since they have children.)
This leads to a combined diagram which looks as below:
To this information, add the likes and dislikes of individuals as follows:
Further, D does not like Thums Up or Pepsi, hence he must like Fanta; Cathy does not like Pepsi (hence Thumps Up) and Abhay likes Thums Up.
Practice Questions:
1. Who among the following likes Thumps Up?
a. Cathy
b. Deepak
c. Abhay
d. Data inadequate
2. How is Fatima related to Emily?
a. Brother
b. Son
c. Father
d. Daughter
3. One of the married couple’s is:
a. Deepak-Banta
b. Deepak-Emily
c. anta-Fatima
d. Emily-Fatima
4. Which of the following cold drinks is liked by Abhay?
a. Thumps Up
b. Fanta
c. Pepsi
d. Data inadequate
Time to Think:
5. How many sons does Emily have?
a. Four
b. Three
c. Two
d. One
Passage 2:
Hello, Ciao and Vanakkam are related to each other.
I. Among the three, one is Hello’s legal spouse, another is Ciao’s sibling and the third is Vanakkam’s sister-in-law.
II. Hello’s legal spouse and Ciao’s sibling are of the same sex.
Solution:
From the statement that Ciao’s sibling and Hello’s legal spouse are of the same sex, we can conclude that Hello cannot be the sibling of Ciao (because Hello’s sex would be different from his/her legal spouse’s sibling). Hence, Ciao’s sibling must be Vanakkam.
This gives us four basic possibilities for the husband wife pair:
(1) Hello (male) – Vanakkam (female; Hello’s wife as well as Ciao’s sibling); Ciao (Vanakkam’s sibling; sex not known). In this case, the situation does not allow for Vanakkam’s sister-in-law. Hence, we can reject this as a possible solution to the situation.
(2) Hello (female) – Vanakkam (male; Hello’s husband as well as Ciao’s sibling); Ciao (Vanakkam’s sibling – sex not known). In this case again, the situation does not allow for Vanakkam’s sister-in-law. Hence, we can reject this as a possible solution to the situation.
(3) Hello (male) – Ciao (female; Hello’s wife as well as Vanakkam’s sibling); Vanakkam (Ciao’s sibling – female as she has to be the same sex as Hello’s spouse). In this case, again the situation does not allow for Vanakkam’s sister-in-law. Hence, we can reject this as a possible solution to the situation.
(4) Hello (female) – Ciao (male; Hello’s husband as well as Vanakkam’s sibling); Vanakkam (Ciao’s sibling – male as she has to be the same sex as Hello’s spouse). In this case, the last condition of Vanakkam’s sister-in-law is met because Hello is the sister-in-law of Vanakkam.
Thus, we conclude that this is the only possible solution given the clues.
Practice Questions:
1. Who is the married man?
a. Hello
b. Ciao
c. Vanakkam
d. Cannot be determined
2. Who is the married woman?
a. Hello
b. Ciao
c. Vanakkam
d. Cannot be determined
3. The number of males amongst the group is
I. 1
II. 2
a. I
b. II
c. I or II
d. Neither I nor II
Time to Think:
4. Who is the Ciao’s sibling?
a. Hello
b. Ciao
c. Vanakkam
d. Cannot be determined
Passage 3:
In a joint family of seven persons L, M, N, O, P, Q and R two are married couples. ‘R’ is a housewife and her husband is a lawyer. ‘N’ is the wife of ‘M’, ‘L’ is an engineer and is the granddaughter of ‘R’, and ‘O’ is the father-in-law of ‘N’, a doctor, and father of ‘P’, a professor. ‘Q’ is L’s brother and M’s son.
Solution:
Practice Questions:
1. How is P related to M?
a. Son
b. Brother
c. Daughter
d. Data inadequate
2. How is Q related to O?
a. Grand father
b. Uncle
c. Grand son
d. Data inadequate
Time to Think:
3. Who is M’s father?
a. O
b. R
c. N
d. Data inadequate
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