APSC Prelim 2018 GS Paper – Analysis of General Mental Ability & Aptitude Section Questions

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APSC Prelim 2018 GS Paper – General Mental Ability & Aptitude Section Questions Analysis

General Mental Ability & Aptitude is an important section in erstwhile General Studies paper in APSC GS Paper. In the revised exam pattern of APSC CC (Prelim) Exam, Questions of Aptitude and Mental Ability (along with Comprehension) has a whole paper in the form of GS-2 (CSAT) Paper.

Analyzing the previous year’s Qs from this section can be very helpful to understand Focus Areas to study more extensively for the GS-2 (CSAT) Paper.

 

Q22. If LIGHT is called MORNING, MORNING is called DARK, DARK is called NIGHT, NIGHT is called SUNSHINE and SUNSHINE is called DUSK, when do we sleep?

  1. At night
  2. At sunshine
  3. In dusk
  4. At dark

Area: code – reasoning

 

Q23. If MINERAL is written as QRSTUVW and SOUND is written as ABCSD, then how will READER be written in the same code ?

  1. SBFEFS
  2. UTVDTU
  3. TUDVUT
  4. QDZCDQ

Area: code letter

 

Q24. Arun said, “This girl is the wife of the grandson of my mother.” Who is Arun to the girl?

  1. Father
  2. Grandfather
  3. Husband
  4. Father-in-law

Area: Relationship

APSC Prelims 2020 Test Series

 

Q25. If P is taller than Q and R is taller than S but shorter than Q, then who among them is the tallest?

  1. P
  2. Q
  3. S
  4. T

Solution

P is taller than Q.
R is taller than S but shorter than Q, which means Q is taller than R and therefore S is shortest.
Decreasing order P>Q>R>S

Area: Puzzle – comparative taller

 

Q26. In the numbers from 100 to 1000 how many times digit 1 comes at the 10’s place?

  1. 9
  2. 10
  3. 90
  4. 900

Solution

The digit 1 comes at the ten’s place in numbers from 110 to 119, 210 to 219, 310 to 319, 410 to 419, 510 to 519, 610 to 619, 710 to 719, 810 to 819, 910 to 919.

∴ Required number=10×9=90.

Area: Numbers

 

Q27. If second and fourth Saturday and all Sundays are holidays in a 30 days month beginning on Saturday, then how many working days are there in the month?

  1. 20
  2. 21
  3. 22
  4. 23

Solution

The month of 30 days starts with a Saturday.

There will be 4 weeks and 2 days.

This means that there are 4 Sundays and 1 second and 1 fourth Saturdays.

In the two days left, one will be a Sunday and the other a Monday.

So total holiday will be 5 Sundays and 1 second and 1 fourth Saturdays=7 days

Working days =30−7=23 days.

Area: Calendar

 

Q28. Arrange the given words in a meaningful sequence and then choose the most appropriate sequence from among the alternatives:

1. Probation, 2. Interview, 3. Selection,

4. Appointment, 5. Advertisement, 6. Application

5, 6, 2, 3, 4, 1

Area: ordering of business processes

 

APSC Prelims 2020 Test Series

 

Q29. In a city, 40% of the adults are illiterate while 85% of the children are literate. If the ratio of the adults to that of the children is 2:3 then what percent of the population is literate?

  1. 20%
  2. 25%
  3. 50%
  4. 75%

Solution

Let the Adults be 2x and Students be 3x.

Given that 40% of students are illiterate i.e 60% of the students are literate.

According to the given condition,

⇒ 60% of 2x + 85% of 3x

⇒ (60/100) * 2x + (85/100) * 3x

⇒ (120x/100) + (255x/100)

⇒ (6x/5) + (51x/20)

⇒ (24x + 51x)/20

⇒ (75x/20)

⇒ (15/4)x

∴ Required % = [ (15/4)x % (1/5x) ] x 100

= (3/4) * 100

= 75%.

Therefore, 75% of the population is literate.

Area: % and ratio



Q30. A hill always has

  1. Trees
  2. animals
  3. water
  4. height

Area: Item properties

 

Q31. The population of a town 2 years ago was 62,500. Due to migration to cities, it decreases at the rate of 4% per year. Therefore, the present population will be

  1. 56700
  2. 57600
  3. 58800
  4. 60000

Area: Compound Interest