46.  Six lectures A, B, C, D, E and F are to be organised in a span of seven day - from Sunday to Saturday, only one lecture on each day in accordance with the following :
(i) A should not be organised on Thursday.
(ii) C should be organised immediately after R.
(iii) There should be a gap of two days between E and D.
(iv) One day will be no lecture (Friday is not that day), just before that day D will be organised.
Which of the following information is not required in finding the complete sequence of organisation of lecture ?


(i) only
(ii) only
(i) and (ii) only
All are required


Answer

 Option

B is organised on Tuesday. Now D is followed by the day with no lecture. D cannot be organised on Friday because then E will be on Tuesday (there is a gap of two days between D and E). It cannot be organised on Thursday (because then, there will be no lecture on Friday). B cannot followed by D. So, D will be organised or Sunday and E on Wednesday. No lecture will be organised on Monday. A cannot be organised on Thursday. So, A will be organised on Saturday. F and C will be organised on Thursday and Friday respectively. So, the correct answer is:
SundayMondayTuesdayWednesdayThursdayFridaySaturday
DXBEFCA
All the given statements are required.

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47.  (i) There is a family of 5 persons - A, B, C, D and E.
(ii) They are working as a doctor, a teacher, a trader, a lawyer and a farmer.
(iii) B, an unmarried teacher, is a daughter of A.
(iv) E, a lawyer, is the brother of C.
(v) C is the husband of the only married couple in the family.
(vi) A, a farmer, is a father of two sons and an unmarried daughter.
(vii) Daughter-in-law of A is a doctor.
Which of the following is a group of male members in the family ?


A, B and C
B and D
A, C and E
A, C and D


Answer

 Option

B is unmarried daughter of A. E is brother of C. C, being a husband, is a male and hence brother of E. So, A is the father of E, C and B. Now, only D remains. So, D is daughter-in-law of A. C is the husband, so D is the wife of C. B is a teacher, E is a lawyer, A is a farmer, D is a doctor. So, C is a trader. There are 3 male members - A, C and E.

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48.  A team of five is to be selected from amongst five boys A, B, C, D and E and four girls P, Q, R and S. Some criteria for selection are: A and S have to be together.
P cannot be put with R.
D and Q cannot go together.
C and E have to be together.
R cannot be put with B.
Unless otherwise stated, these criteria are applicable to all the questions below.
If two of the members have to be boys, the team will consists of


A, B, S, P, Q
A, D, S, Q, R
B, D, S, R, Q
C, E, S, P, Q


Answer

 Option

If A is selected, S has to be selected. If B is selected, R cannot be selected. If D is selected, Q cannot be selected. So, A, D, S, Q, R and B, D, S, R, Q are wrong. C, E, S, P, Q is not possible because S has to be accompanied with A.

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49.  Six lectures A, B, C, D, E and F are to be organised in a span of seven day - from Sunday to Saturday, only one lecture on each day in accordance with the following :
(i) A should not be organised on Thursday.
(ii) C should be organised immediately after R.
(iii) There should be a gap of two days between E and D.
(iv) One day will be no lecture (Friday is not that day), just before that day D will be organised.
Which of the following is the last lecture in the series ?


A
B
C
Cannot be determined


Answer

 Option

B is organised on Tuesday. Now D is followed by the day with no lecture. D cannot be organised on Friday because then E will be on Tuesday (there is a gap of two days between D and E). It cannot be organised on Thursday (because then, there will be no lecture on Friday). B cannot followed by D. So, D will be organised or Sunday and E on Wednesday. No lecture will be organised on Monday. A cannot be organised on Thursday. So, A will be organised on Saturday. F and C will be organised on Thursday and Friday respectively. So, the correct answer is:
SundayMondayTuesdayWednesdayThursdayFridaySaturday
DXBEFCA
A is the last lecture.

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50.  Five persons are standing in aline. One of the two persons at the extreme ends is a professor and the other a businessman. An advocate is standing to the right of a student. An author is to the left of the businessman. The student is standing between the professor and the advocate. Counting from the left the advocate. Counting from the left the advocate is at which place ?


1st
2nd
3rd
5th


Answer

 Option

The advocate is to the right of the student, who is standing between the professor and the advocate. So, we have : Professor, Student, Advocate. The author is to the left, of businessman. so, we have : Author, Businessman. Since the professor and businessman are at the ends, the arrangement from left to right becomes: Professor, Student, Advocate, Author, Businessman. Clearly, the advocate is third from the left.

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