12 self study question with answer--12

Question 1

If the average of 5 consecutive even numbers is 52, then what is the difference between first and last number?

  12

  10

  8

  6

It's '8 '
Let first even no. be x,
Then,  = 52
⇒ 
⇒First no. = 48, Last no. = 48 + 8 = 56
⇒Difference = 56-48 = 8

Question 2

Rs. 1100 becomes Rs. 1256 in 3 years at a certain rate of SI. If the rate of interest is increased by 5%, what amount will Rs. 1100 become in 3 years?

  Rs. 1371

  Rs. 1421

  Rs. 1411

  Rs. 1471

It's 'Rs. 1421 '
As rate of interest increases by 5%, principal amount will also increase by 5% of Rs. 1100 for 3 years.
⇒5% of 1100 = 55
⇒55 = 165
So, new amount = 1156 + 165 = 1421

Question 3

A is 50% less than B. By what percentage is B more than A?

  25

  50

  75

  100

It's '100 '
Let B = 100
⇒Then, as A is 50% less than B, therefore A = 50
⇒Now, B is more than A by 

Question 4

Direction:What will come at the place of question mark?

C + N : 42 : : F + R : ?

  102

  108

  95

  114

It's '108 '
42 is the product of position of C and N in English alphabets.
⇒ 
⇒Similarly, 

Question 5

7 : 350 : : 9 : ?

  738

  728

  720

  638

It's '738 '
7³ + 7 = 350
So, 9³ + 9 = 738

Question 6

In a language JUNGLE is coded as UJNGEL, then how will BANDID be coded?

  ABNDDI

  ABDNDI

  ABNDID

  BANDDI

It's 'ABNDDI '
First and second letters are reversed. Similarly fifth and sixth. Remaining are left unchanged.

Question 7

Direction:Four alternatives are given for the idiom/phrase given as the question. Choose the alternative which best expresses the meaning of the idiom/phrase

To bite the dust

  To surrender in a battle

  To lose in a battle

  To conquer the battle

  To not to fight the battle

It's 'To lose in a battle '
To fall dead, especially in combat, To be defeated.

Question 8

Last but not the least

  one is placed last because of less importance

  last one mentioned is not important

  last one mentioned is not less important than others

  others are less important than the last one

It's 'last one mentioned is not less important than others '

Question 9

Take a back seat

  giving more importance to back seats in class

  getting rid of responsibility

  sitting on back seat in a journey

  not involving fully in something

It's 'not involving fully in something '

Question 10

RK Laxman, who died few months ago, was a famous

  Novelist

  Cartoonist

  Editor

  Publisher

It's 'Cartoonist '

Question 11

Capital of European city Spain is

  Madrid

  Barcelona

  Paris

  Moscow

It's 'Madrid '

Question 12

Which country is home to tallest mountain in the world?

  Bhutan and India combined

  China

  USA

  Nepal

It's 'Nepal '