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

Total Questions: 50

21. What is the number of logically possible orders of all six cousins in terms of increasing age?

Correct Answer: (b) 2
Solution:Two logically possible order of all six cousins in terms of increasing age.

22. Two men, Anil and David, and two women, Shabnam and Rekha are in a sales group. Only two speak Tamil. The other two speak Marathi. Only one man and one woman can drive a car. Shabnam speaks Marathi. Anil speaks Tamil. Both Rekha and David can drive. [2015-II]

Which of the following statements is true?

Correct Answer: (d) One of those who can drive a car speaks Tamil.
Solution:

From above table, it can be concluded that only of those who can drive car can speaks Tamil.

23. A society consists of only two types of people fighters and cowards. Two cowards are always friends. A fighter and a coward are always enemies. Fighters are indifferent to one another. If A and B are enemies, C and D are friends, E and F are indifferent to each other, A and E are not enemies, while Band F are enemies. [2015-II]

Correct Answer: (b) A, E and F are fighters.
Solution:

From above table, it is clear that A, E and F are fighters.

24. If A runs less fast than B, and B runs as fast but not faster than C; then, as compared to A, C runs [2015-II]

Correct Answer: (b) faster than A
Solution:A <B<C
Now, compared to A, C runs faster than A.

25. Each of A,B, C and D has 100. A pays 20 to B, who pays 10 to C, who gets 30 from D. In this context, which one of the following statements is not correct? [2015-II]

Correct Answer: (c) C has more than what A and D have together
Solution:According to question,

Each of A, B, C and D = 100

So, option (c) is correct.

26. Examine the following statements: [2015-II]

1. Lady's finger is tastier than cabbage.

2. Cauliflower is tastier than lady's finger.

3. Cabbage is not tastier than peas.

The conclusion that can be drawn from these statements is that

Correct Answer: (d) cauliflower is tastier than cabbage.
Solution:Cauliflower > Lady finger > Cabbage But Peas > Cabbage
The conclusion that can be drawn from these statements is that cauliflower is tastier than cabbage.

27. Shahid and Rohit start from the same point in opposite directions. After each 1 km, Shahid always turns left and Rohit always turns right. Which of the following statements is correct? [2015-II]

Correct Answer: (b) They meet after each has travelled 3km.
Solution:After both have travelled 3 km, their positions would be on follows.

28. Twelve people form a club. By picking lots, one of them will host a dinner for all once in a month. The number of dinners a particular member has to host in one year is [2015-II]

Correct Answer: (d) Cannot be predicted
Solution:Cannot be predicted because data is not sufficient.

29. Out of 130 students appearing in an examination, 62 failed in English, 52 failed in Mathematics, whereas 24 failed in both English and Mathematics. The number of students who passed finally is [2015-II]

Correct Answer: (a) 40
Solution:

Total students failed = (62+52)-24=114-24-90

Number of students passed finally = 130-90 = 40

30. In a group of persons travelling in a bus, 6 persons can speak Tamil, 15 can speak Hindi and 6 can speak Gujarati. In that group none can speak any other language. If 2 persons in the group can speak two languages only and one person can speak all the three languages, then how many persons are there in the group? [2015-II]

Correct Answer: (c) 23
Solution:Let a = Speaks one language

Let b = Speaks two language

Letc c = Speaks three language

then a + 2b + 3c = 6 + 15 + 6

a + 4 + 3 = 27,                         a = 20

∴ Total number of persons in the group = 20 + 2 + 1 = 23