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

Total Questions: 50

11. Consider the following figures: [2014-II]

Change in positions of beads in the four figures above follows a sequence. Following the same sequence, which of the figures below should appear as the fifth figure above?

(a)

(b)

(c)

(d)

 

Correct Answer: (b)
Solution:From 1 to 2 - vertical interchange of half shaded circle.

12. Price is not the same thing as value. Suppose that on a day the price of everything viz., coal, bread, postage stamps, a day's labour, the rent of houses, etc. were to double. Prices then would certainly rise, but values of all things except one would not." [2014-II]

The writer wants to say that if prices of all things were doubled

Correct Answer: (d) the value of money only would be halved.
Solution:Due to inflation the value of money only would be halved

13. "Liberty, therefore, is never real unless the Government can be called to account when it invades rights." [2014-II]

Which one of the following is the best justification of the above statement ?

Correct Answer: (d) In the understanding that liberty and restraints are complementary
Solution:The statement implies that actual liberty is when the ruling government can also be called to account or tried in a court of law when it invades rights. This justify that liberty and restraints are complementary.

14. The number of persons who read magazine X only is thrice the number of persons who read magazine Y. The number of persons who read magazine Y only is thrice the number of persons who read magazine X. Then, which of the following conclusions can be drawn? [2015-II]

1. The number of persons who read both the magazines is twice the number of persons who read only magazine X.

2. The total number of persons who read either one magazine or both the magazines is twice the number of persons who read both the magazines.

Select the correct answer using the code given below:

Correct Answer: (a) 1 only

15. Each of the six different faces of a cube has been coated with a different colour i.e., V, I, B, G, Y and O. Following information is given: [2015-II]

1. Colours Y, O and B are on adjacent faces.

2. Colours I, G and Y are on adjacent faces.

3. Colours B, G and Y are on adjacent faces.

4. Colours O, V and B are on adjacent faces.

Which is the colour of the face opposite to the face coloured with O?

Correct Answer: (c) G
Solution:From 2 and 3, I and B are on opposite faces. from 1 and 4, Y and V are adjacent to O.

Hence, G is the colour of the face opposite to the face coloured with O.

16. Consider the following statements followed by two conclusions: [2015-II]

Statements: Some men are great. Some men are wise.

Conclusion I: Men are either great or wise.

Conclusion II: Some men are neither great nor wise

Which one of the following is correct?

Correct Answer: (d) Neither of the conclusions is valid
Solution:

Conclusion I : False                                  Conclusion II : False

17. Consider the following statements: [2015-II]

1. Some claim to have seen UFOs (Unidentified Flying Objects).

2. Life on other heavenly bodies is considered to be a possibility.

3. Voyage to space is now an established fact.

From the above statements, it may be concluded that

Correct Answer: (d) Nothing definite can be said about the UFOs
Solution:UFOs may or may not be heavenly bodies. Possibility of life on other heavenly bodies does not prove either that UFOs are heavenly bodies or that they are sent from other heavenly bodies. So, this also cannot be proved that living species in other heavenly bodies are more intelligent than man. Therefore, nothing definite can be said about the UFOs.

18. If ABC DEED = ABCABC; where A, B, C, D and E are different digits, what are the values of D and E? [2015-II]

Correct Answer: (c) D = 1 , E = 0
Solution:ABC × DEED = ABСАВС
We know that, when we write any Number in form of ABCABC then that number must be divisible by 13,

11 and 7 or ABCABC is multiple of 1001

So, 1001 DEED

100 = 113 11 x 7

ABC DEED = ABC ABCABC × 1001ABC ABC

On comparing D = 1, E = 0

19. Usha runs faster than Kamala, Priti runs slower than Swati, Swati runs slower than Kamala. Who is the slowest runner? [2015-II]

Correct Answer: (b) Priti
Solution:According to question, Priti Swati < Kamala < Usha From the above, it can concluded that priti is the slowest runner.

20. Which one of the following is possible? [2015-II]

A, B, C, D, E and F are cousins. No two cousins are of the same age, but all have birthdays on the same day of the same month. The youngest is 17 years old and the oldest E is 22 years old. F is somewhere between B and D in age. A is older than B. C is older than D. A is one year older than C.

Correct Answer: (b) F is 18 years old
Solution:

F is 18 years old.