12 self study question with answer--22

Question 1

The average of 8 numbers is 22. If one number is excluded, then the average becomes 19. Find the excluded number?

  33

  53

  43

  63

It's '43 '
Total sum is 22 × 8 = 176
After excluding no.: Total sum is 19 × 7 = 133
Hence, excluding no is 176-133 = 43

Question 2

The sum of four consecutive natural numbers which are divisible by 4 is 120. Find the largest number?

  48

  36

  32

  40

It's '36 '
Let four nos. Be 4x, 4x + 4, 4x + 8, 4x + 12
Now according to question: 4x + 4x + 4 + 4x + 8 + 4x + 12 = 120
16x = 96 ⇒ x = 6
Numbers are: 24, 28, 32, 36
Greatest no. is 36

Question 3

To become a perfect square 18000 is to be multiplied by which smallest number?

  2

  5

  3

  8

It's '5 '
18000 = 2 × 2 × 3 × 3 × 5 × 100
Hence smallest required no. is 5
18000 × 5 = 90000 which is square of 300

Question 4

Direction: In the following questions, find the odd word/number/letters from the given alternatives.

Find the odd word/number/letters from the given alternatives

  April

  September

  August

  November

It's 'August'
Except August, all have 30 days.

Question 5

Find the odd word/number/letters from the given alternatives

  New Delhi

  New York

  New Jersey

  Sydney

It's 'New Delhi'
Only New Delhi is country capital.

Question 6

Find the odd word/number/letters from the given alternatives

  [9, 729]

  [8, 512]

  [11, 1331]

  [13, 2179]

It's '[13, 2179] '
Except “d”, the pair consists of number and it’s cube.

Question 7

Direction: Choose the correct one word substitute from alternatives.

Dictionary definition of a word?

  Respite

  Denotation

  Amenity

  Connotation

It's 'Denotation '

Question 8

Intensely enthusiastic?

  Opaque

  Sullen

  Ardent

  Pungent

It's 'Ardent '

Question 9

To reject or exclude from a group?

  Condone

  Disparage

  Mollify

  Ostracize

It's 'Ostracize '

Question 10

Among the following which is not a factor of production?

  Organisation

  Land

  Capital

  Technology

It's 'Organisation '

Question 11

Principle of “Survival of Fittest” was supported by?

  Socialists

  Fascists

  Individualists

  Utilitarianists

It's 'Fascists '

Question 12

In which state Lokayukta and Upalokayukta Act was first passed?

  Gujarat

  Delhi

  Maharashtra

  Rajasthan

It's 'Maharashtra '