(i) A, B, C, D, E and F are six members in a family in which there are two married couples.
(ii) D is brother of F. Both D and F are lighter than B.
(iii) B is mother of D and lighter than E.
(iv) C, a lady, is neither heaviest nor the lightest in the family.
(v) E is lighter than C.
(vi) The grandfather in the family is the heaviest.
How is E related to F ?
Answer: C
In terms of weight, F < B, D < B, B < E, E < C. So, we have : D < F < B < E < C or F < D < B < E < C. C is not the heaviest. So, A is the heaviest. Thus, the sequence becomes : F < D < B < E < C < A or D < F < B < E < C < A.
D is the brother of F.
B is the mother of D and F.
A, being the heaviest, is the grandfather.
Now, C is a lady and so one couple is AC.
B is a female and so on cannot pair up with C. So, the other couples is BE.
E is the husband of B and B is the mother of F. So, E is the father of F.
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How many male members are there in the family ?
Answer: D
In terms of weight, F < B, D < B, B < E, E < C. So, we have : D < F < B < E < C or F < D < B < E < C. C is not the heaviest. So, A is the heaviest. Thus, the sequence becomes : F < D < B < E < C < A or D < F < B < E < C < A.
D is the brother of F.
B is the mother of D and F.
A, being the heaviest, is the grandfather.
Now, C is a lady and so one couple is AC.
B is a female and so on cannot pair up with C. So, the other couples is BE.
The sex of F is known.
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(i). There is a family of six members A, B, C, D, E and F.
(ii). There are two married couples in the family and the family members represent three generations.
(iii). Each member has a distinct choice of a colour amongst green, yellow, balck, red, white and pink.
(iv). No lady member likes either green or white.
(v). C, who likes black colour is the daughter-in-law of E.
(vi). B is brother of F and son of D and likes pink.
(vii). A is grandmother of F and F does not like red.
(viii). The husband has a choice of green colour, his wife likes yellow.
Which of the following is one of the married couples ?
Answer: B
B and F are children of D.
A is grandmother of F. So, B and F represent third generation.
Now, C is the daughter-in-law of E. So, A and E form a couple and represent first generstion. A, being mother, is a female and so E is a male.
C is the daughter-in-law of E and so D is E's son. Thus, CD is the other couple and represents second generation.
C likes black, B likes pink. Green and yellow are the preferences of a couple. So, A likes yellow and E likes green. Now, F does not like red. So, F likes white and D likes red.
Now F likes white and so cannot be a lady. B is the son of D and hence a male.
AE and CD are two couples.
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Which of the following is the colour preference of A ?
Answer: B
B and F are children of D.
A is grandmother of F. So, B and F represent third generation.
Now, C is the daughter-in-law of E. So, A and E form a couple and represent first generstion. A, being mother, is a female and so E is a male.
C is the daughter-in-law of E and so D is E's son. Thus, CD is the other couple and represents second generation.
C likes black, B likes pink. Green and yellow are the preferences of a couple. So, A likes yellow and E likes green. Now, F does not like red. So, F likes white and D likes red.
Now F likes white and so cannot be a lady. B is the son of D and hence a male.
A prefers yellow colour.
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Which of the following is true about F ?
Answer: A
B and F are children of D.
A is grandmother of F. So, B and F represent third generation.
Now, C is the daughter-in-law of E. So, A and E form a couple and represent first generstion. A, being mother, is a female and so E is a male.
C is the daughter-in-law of E and so D is E's son. Thus, CD is the other couple and represents second generation.
C likes black, B likes pink. Green and yellow are the preferences of a couple. So, A likes yellow and E likes green. Now, F does not like red. So, F likes white and D likes red.
Now F likes white and so cannot be a lady. B is the son of D and hence a male.
Both F and B are males and both are children of D. So, F is the brother of B.
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How many male members are there in the family ?
Answer: C
C Four
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Which of the following is the colour combination of one of the couples ?
Answer: D
B and F are children of D.
A is grandmother of F. So, B and F represent third generation.
Now, C is the daughter-in-law of E. So, A and E form a couple and represent first generstion. A, being mother, is a female and so E is a male.
C is the daughter-in-law of E and so D is E's son. Thus, CD is the other couple and represents second generation.
C likes black, B likes pink. Green and yellow are the preferences of a couple. So, A likes yellow and E likes green. Now, F does not like red. So, F likes white and D likes red.
Now F likes white and so cannot be a lady. B is the son of D and hence a male.
Yellow - Green is the colour combination of the couple AE.
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At an Electronic Data Processing Unit, five out of the eight program sets P, Q, R, S, T, U, V and W are to be operated daily. On any one day, except for the first day of a month, only three of the program sets must be the ones that were operated on the previous day. The program operating must also satisfy the following conditions :
(i). If program P is to be operated on a day, V cannot be operated on that day.
(ii). If Q is to be operated on a day, T must be one of the programs to be operated after Q.
(iii). If R is to be operated on a day, V must be one of the programs to be operated after R.
(iv). The last program to be operated on any day must be either S or U.
If R is operated at third place in a sequence, which of the following cannot be the second program in that sequence ?
Answer: A
If R is operated at third place, it will be followed by V at the fourth place and S or U at the end.
So, Q which must have T as one of the programs after it, cannot be at the second place.
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Which of the following is true of any day's valid program set operation ?
Answer: C
Clearly, if R is operated at the fourth place, V must be operated somewhere after it. This is not possible since the fifth program is the last one which has to be either S or U. So, R cannot be operated at the fourth Place.
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Which of the following could be the set of programs to be operated on the first day of a month ?
Answer: C
Condition (i) makes (e) incorrect.
Condition (ii) is not followed in (d).
Condition (iii) is not followed in (a).
Condition (iv) is not followed in (b).
So, the only correct set is (c).
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