Mental Ability, Analytical and Logical Reasoning (UPSC) Part-V

Total Questions: 50

1. A military code writes SYSTEM as SYSMET and NEARER as AENRER. Using the same code, FRACTION can be written as: [2016-II]

(a) CARFTION
(b) FRACNOIT
(c) NOITCARF
(d) CARFNOIT

Correct Answer: (d) CARFNOIT

Solution:

2. In a class of 60 students, where the number of girls is twice that of boys, Kamal, a boy, ranked seventeenth from the top. If there are 9 girls ahead of Kamal, the number of boys in rank after him is: [2016-II]

(a) 13
(b) 12
(c) 7
(d) 3

Correct Answer: (b) 12

Solution:Let the number of boys be x, then numbers of girls = 2x

∴ x + 2 x 60; or 3x = 60; or x = 20

So numbers of boys 20 and numbers of girls = 40

Numbers of student behind Kamal in rank (60-17) = 43

Numbers of girls ahead of Kamal in rank = 9

∴ Numbers of boys behind Kamal in rank (43-31) = 12

3. A person X was driving in a place where all roads ran either north-south or east-west, forming a grid. Roads are at a distance of 1 km from each other in a parallel. He started at the intersection of two roads, drove 3 km north, 3 km west and 4 km south. Which further route could bring him back to his starting point, if the same route is not repeated? [2016-II]

(a) 3 km east, then 2 km south
(b) 3 km east, then 1 km north
(c) 1 km north, then 2 km west
(d) 3 km south, then 1 km north

Correct Answer: (b) 3 km east, then 1 km north

Solution:

X starts from point A, passes through point B and C and reaches point D.
X returns from point D, passes through point E and reaches point A back.

4. Consider the following statement: [2016-II]

"We shall go either for a picnic or for trekking".

Which of the following, if true, would falsify this claim?

(a) We go for a picnic but not for trekking
(b) Activities such as picnic and trekking are encouraged by the health authorities
(c) We go for trekking and not for picnic
(d) We do not go either for picnic or for trekking

Correct Answer: (d) We do not go either for picnic or for trekking

Solution:Option (d) is the just contradiction of given statement, if it is true, it would falsify the given statement.

5. There were 50 faculty members comprising 30 males and the rest females. No male faculty member knew music, but many of the female faculty members did. The Head of the institution invited six faculty members to a tea party by draw of lots. At the party it was discovered that no member knew music. The conclusion is that: [2016-II]

(a) the party comprised male faculty members only
(b) the party comprised only those female faculty members who could not give renderings in music
(c) the party comprised both male and female faculty members
(d) nothing can be said about the gender composition of the party

Correct Answer: (d) nothing can be said about the gender composition of the party

Solution:Question does not say anything about the gender composition of the group invited for party. Further, we donot know which specific female faculty know music. So either all in party were males, or some males and some females who did not know music were present in the party. So (d) is definitely correct.

6. Five people A, B, C, D and E are seated about a round table. Every chair is spaced equidistant from adjacent chairs. [2016-II]

(i) C is seated next to A

(ii) A is seated two seats from D

(iii) B is not seated next to A

On the basis of above information, which of the following must be true?

1. D is seated next to B

2. E is seated next to A

3. D and Care separated by two seats

Select the correct answer using the code given below:

(a) 1 only
(b) 1 and 2 only
(c) 3 only
(d) Neither 1 nor 2 nor 3

Correct Answer: (b) 1 and 2 only

Solution:The arrangement is in circular table

C is seated next to A
Conclusion: AC - or CA

A is seated two seats from D
Conclusion: A-Dor D-A
B is not seated next to A
Conclusion: E must be next to A
Combining, A CDBE

(There can be many arrangements)

So, only statement 1 and 2 are correct.

7. There are some nectar-filled flowers on a tree and some bees are hovering on it. If one bee lands on each flower, one bee will be left out. If two bees land on each flower, one flower will be left out. The number of flowers and bees respectively are: [2016-II]

(a) 2 and 4
(b) 3 and 2
(c) 3 and 4
(d) 4 and 3

Correct Answer: (c) 3 and 4

Solution:No. of bee > Flower. So, checking by option there are 3 and 4.

8. Who is the doctor? [2016-II]

There are five persons in a group - P, Q, R, S and T. The group has one doctor, one lawyer and one artist. P and S are unmarried students. T is a man married to one of the group members. Q is the brother of P and is neither doctor nor artist. R is not doctor.

(a) T
(b) P
(c) Q
(d) R

Correct Answer: (a) T

Solution:T is the Doctor.

According to the given information, the arrangement of five persons in a group is as following:

Person	Doctor	Lawyer	Artist	Gender
P
Q		✓		Male
R			✓	Female
S
T	✓			Male

S is also unmarried.

9. Who is the artist? [2016-II]

(a) P
(b) Q
(c) R
(d) T

Correct Answer: (c) R

Solution:R is the Artist.

According to the given information, the arrangement of five persons in a group is as following:

Person	Doctor	Lawyer	Artist	Gender
P
Q		✓		Male
R			✓	Female
S
T	✓			Male

S is also unmarried.

10. Who is the spouse of R? [2016-II]

(a) P
(b) T
(c) Q
(d) S

Correct Answer: (b) T

Solution:T is the spouse of R.

According to the given information, the arrangement of five persons in a group is as following:

Person	Doctor	Lawyer	Artist	Gender
P
Q		✓		Male
R			✓	Female
S
T	✓			Male

S is also unmarried.

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Mental Ability, Analytical and Logical Reasoning (UPSC) Part-V

1. A military code writes SYSTEM as SYSMET and NEARER as AENRER. Using the same code, FRACTION can be written as: [2016-II]

2. In a class of 60 students, where the number of girls is twice that of boys, Kamal, a boy, ranked seventeenth from the top. If there are 9 girls ahead of Kamal, the number of boys in rank after him is: [2016-II]

4. Consider the following statement: [2016-II]

6. Five people A, B, C, D and E are seated about a round table. Every chair is spaced equidistant from adjacent chairs. [2016-II]

7. There are some nectar-filled flowers on a tree and some bees are hovering on it. If one bee lands on each flower, one bee will be left out. If two bees land on each flower, one flower will be left out. The number of flowers and bees respectively are: [2016-II]

8. Who is the doctor? [2016-II]

9. Who is the artist? [2016-II]

10. Who is the spouse of R? [2016-II]

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