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

Total Questions: 50

31. P = (40% of A) + (65% of B) and Q = (50% of A)+ (50% of B), where A is greater than B. [2017-II]

In this context, which of the following statements is correct?

(a) P is greater than Q.
(b) Q is greater than P.
(c) P is equal to Q.
(d) None of the above can be concluded with certainty.

Correct Answer: (d) None of the above can be concluded with certainty.
Note:

None of the above can be concluded with certainty.

32. Consider the given statement and the two conclusions that follow [2017-II]

Statement: Morning walk is good for health.:

Conclusions: 1. All healthy people go for morning walk.

2. Morning walk is essential for maintaining good health.

What is/are the valid conclusion/conclusions?

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

Correct Answer: (d) Neither 1 nor 2
Note:

Morning walk is good for health. But, that it is essential cannot be concluded. Again, it is not the only means of maintaining good health; so, that all healthy people go for morning walk cannot be concluded.

33. Six boys A, B, C, D, E and F play a game of cards. Each has a pack of 10 cards. F borrows 2 cards from A and gives away 5 to C who in turn gives 3 to B while B gives 6 to D who passes 1 to E. Then the number of cards possessed by D and E is equal to the number of cards possessed by [2017-II]

(a) A, B and C
(b) B, C and F
(c) A, B and F
(d) A, C and F

Correct Answer: (b) B, C and F
Note:

Hence, D + E = B + C + F.

34. Which of the following statements is/are correct regarding biopesticides? [2017-II]

1. They are not hazardous to human health.

2. They are persistent in environment.

3. They are essential to maintain the biodiversity of any ecosystem.

Select the correct answer using the code given below.

(a) 1 only
(b) 1 and 2 only
(c) 1 and 3 only
(d) 1, 2 and 3

Correct Answer: (a) 1 only
Note:

Biopesticides are not hazardous to human health but they are not essential to maintain the biodiversity of any ecosystem.

35. In a test, Randhir obtained more marks than the total marks obtained by Kunal and Debu. The total marks obtained by Kunal and Shankar are more than those of Randhir. Sonal obtained more marks than Shankar. Neha obtained more marks than Randhir. Who amongst them obtained highest marks? [2017-II]

(a) Randhir
(b) Neha
(c) Sonal
(d) Data are inadequate

Correct Answer: (d) Data are inadequate
Note:

(d) Randhir > (Kunal + Debu) .... (i)
(Kunal + Shankar) > Randhir .....(ii)
Sonal > Shankar .....(iii)
Neha > Randhir ......(iv)

From above equation we can not be find who amongst them obtained highest marks.
So, data are inadequate.

36. Examine the following statements: [2017-II]

1. All colours are pleasant.

2. Some colours are pleasant.

3. No colour is pleasant

4. Some colours are not pleasant.

Given that statement 4 is true, what can be definitely concluded?

(a) 1 and 2 are true.
(b) 3 is true.
(c) 2 is false.
(d) 1 is false.

Correct Answer: (d) 1 is false.
Note:

1. False
2. Can't say
3. Can't say
Hence (1) is false.

37. Consider the following relationships among members of a family of six persons A, B, C, D, E and F: [2017-II]

1. The number of males equals that of females.

2. A and E are sons of F.

3. D is the mother of two, one boy and one girl.

4. B is the son of A.

5. There is only one married couple in the family at present.

Which one can be drawn from following the given inferences?

(a) A, B and C are all females.
(b) A is the husband of D.
(c) E and F are children of D.
(d) D is the daughter of F

Correct Answer: (b) A is the husband of D.
Note:

A is the husband of D.

38. The outer surface of a 4 cm x 4 cm x 4 cm cube is painted completely in red. It is sliced parallel to the faces to yield sixty four 1 cm x 1 cm x 1 cm small cubes. How many small cubes do not have painted faces? [2017-II]

(a) 8
(b) 16
(c) 24
(d) 36

Correct Answer: (a) 8
Note:

Total number of small cubes do not have painted faces = (4 - 2)³ = 8.

39. Consider the following: [2017-II]

A, B, C, D, E, F, G and H are standing in a row facing North. B is not neighbour of G.

F is to the immediate right of G and neighbour of E.

G is not at the extreme end.

A is sixth to the left of E.

H is sixth to the right of C.

Which one of the following is correct in respect of the above?

(a) C is to the immediate left of A.
(b) D is immediate neighbour of B and F.
(c) G is to the immediate right of D.
(d) A and E are at the extreme ends.

Correct Answer: (c) G is to the immediate right of D.
Note:

The given information can be represented as -

Hence, G is the immediate right of D.

40. In a certain code, '256' means 'red colour chalk', '589' means "green colour flower' and '254' means 'white colour chalk'. The digit in the code that indicates 'white' is [2017-II]

(a) 2
(b) 4
(c) 5
(d) 8

Correct Answer: (b) 4
Note:

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