UNESCO, Climate change, - Quantitative Aptitude (MCQ) questions

1)   The marked price of a watch is Rs. 800. A shopkeeper gives two successive discounts and sells the watch at Rs. 612. If the first discount is 10%, the second discount is

a. 12%
b. 20%
c. 15%
d. 10%
Answer  Explanation 

ANSWER: 15%

Explanation:
discount


2)   Read each sentence given below and find out whether there is an error in it. The error, if any will be one of the parts of the sentence which are marked as 1,2,3 and 4. If there is no error, the answer will be (5) i.e. No error. (Ignore the errors of punctuation, if any).

Darts are (1)  / played by (2)  / men as well (3)  / as women. (4)  / No Error (5)


a. 1
b. 2
c. 3
d. 4
e. 5
Answer  Explanation 

ANSWER: 1

Explanation:
'Darts' is a noun, which 'looks' plural, but is used as 'singular'.

The correct sentence should be: Darts is played by men as well as women.

To understand this type of errors, we must understand the behavior of nouns.

Nouns can be divided into several types, as covered in this and following questions.

Nouns that look like plural, but are used as singular


News, Mathematics, Ethics, Linguistics, Phonetics, Politics, Economics, Statistics, Measles, Rickets, Billiards, Darts, Droughts, Innings, Gymnastics, Mechanics, Classics, Physics, Summons, Gallows
Example:
Incorrect:Mathematics are a difficult subject.
Correct:Mathematics is a difficult subject.

Incorrect:Politics are a dirty game.
Correct:Politics is a dirty game.
The similar explanation applies to the usage of all other words listed above.


3)   Rs. 8400 is divided among A, B, C and D in such a way that the shares of A and B, B and C, and C and D are in the ratios of 2:3, 4:5 and 6:7 respectively. The share of A is

a. Rs. 1280
b. Rs. 8400
c. Rs. 8210
d. Rs. 1320
Answer  Explanation 

ANSWER: Rs. 1280

Explanation:
ratio and proportion


4)   In the question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is conclusion drawn from preceding two statements.

Statement - A. No apple is a door.
B. All poles are doors.
C. No pole is an apple.
D. Some poles are not apples.
E. Some apples are poles.
F. Some doors are not apples.


a. women
b. ACB
c. BDA
d. DFA
Answer  Explanation 

ANSWER: women

Explanation:
No explanation is available for this question!


5)   In the question given below has a set of three or four statements. Each set of statements is further divided into three segments. Choose the alternative where the third segment in the statement can be logically deduced using both the preceding two, but not just from one of them.

Statement - A. All cats are mad. All sick persons are mad. So, all sick persons are cats.
B. All oranges are white. All figs are oranges. So, all figs are white.
C. No man can crawl. No kite can crawl. So, all men are kites.


a. A
b. B
c. C
d. None
Answer  Explanation 

ANSWER: B

Explanation:
No explanation is available for this question!


6)   In the following question, various terms of an alphabet series are given with one or more missing terms as shown by (?). Choose the missing term out of the given alternatives.

L, O, J, T, H, ?


a. X
b. S
c. Z
d. W
Answer  Explanation 

ANSWER: S

Explanation:
The given series is a combination of two series.

I: L, J, H
II: O, Q, ?

I consists of 12th, 10th and 8th letter from the beginning of alphabets.
II consists of 12th, 10th and 8th letter from the end of alphabets.

So, the next letter should be 8th letter from end of alphabets i.e. S


7)   Four pairs of words follow the first pair. Select the pair whose relation most closely matches the first pair.

Talkative: Garrulity


a. Garbled: Distorted
b. Sensitive: Unsusceptible
c. Delinquent: Derelict
d. Gullible: Naiveté
Answer  Explanation 

ANSWER: Gullible: Naiveté

Explanation:
No explanation is available for this question!


8)   The question given below has a set of three or four statements. Each set of statements is further divided into three segments. Choose the alternative where the third segment in the statement can be logically deduced using both the preceding two, but not just from one of them.

Statement - I. All bats are lions.
II. No cow is lion.
III. Some camels are cows.

Conclusion - I. Some lions are camels.
II. No camel is bat.
III. Some bats are cows.


a. Only I follows
b. Only II follows
c. Only III follows
d. Only I and II follows
e. None of these
Answer  Explanation 

ANSWER: None of these

Explanation:
syllogism 4 1621


9)   The question given below has a set of three or four statements. Each set of statements is further divided into three segments. Choose the alternative where the third segment in the statement can be logically deduced using both the preceding two, but not just from one of them.

Statement - I. Some pens are books.
II. All temples are books.
III. Some libraries are temples.

Conclusion - I. Some libraries are pens.
II. Some pens are temples.
III. Some libraries are books.


a. Only I follows
b. Only II follows
c. None follows
d. Only I and II follows
e. Both II and III follow
Answer  Explanation 

ANSWER: None follows

Explanation:
syllogism 5 1621


10)   Study hard (1)  / lest (2)  / you should not (3)  / fail. (4)  / No Error (5)

a. 1
b. 2
c. 3
d. 4
e. 5
Answer  Explanation 

ANSWER: 3

Explanation:
'Lest...should' is used to extend a warning and also suggest the consequences of not paying attention to that warning.

Warning +Lest+Person +Should +Consequence
Work hardlestyoushouldfail.
The use of this conjunction in any sentence conveys a negative sense. As such, 'no' or 'not' should not be used in that sentence.

Remove 'not'.

'Lest...should' already conveys a negative sense.

The correct sentence should be: Study hard lest you should fail.

** Lest is always followed by should, with a ‘not’ anywhere.
'should' here can not be replaced by 'would' or 'may'.


For e.g. Go through the notes again and again lest you would/may fail, is incorrect.


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