Aptitude and Reasoning Questions

Q:

Consider the argument and decide which of the given assumptions is/are implicit.

Argument :

A top university has reduced the syllabus of Mathematics in Class 12.

Assumptions:

1. Students can score more marks than before in Mathematics.
2. This has been done to reduce the stress and burden of the students in Mathematics.

 

A) Only assumption 2 is implicit B) Both 1 and 2 are implicit
C) Only assumption 1 is implicit D) Neither 1 and 2 is implicit
 
Answer & Explanation Answer: A) Only assumption 2 is implicit

Explanation:
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Filed Under: Statement and Assumptions
Exam Prep: Bank Exams

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Q:

Relation Between Efficiencies

6 boys and 8 girls finish a job in 6 days and 14 boys and 10 girls finish the same job in 4 days. In how many days working together 1 boy and 1 girl can finish the work?

Answer

Sol : In this kind of questions we find the work force required to complete the work in 1 day (or given unit of time) then we equate the work force to find the relationship between the efficiencies (or work rate) between the different workers.


 


Therefore, 6B+8G = 6 days


 => 6(6B+8G)= 1 day  (inversely proportional)


 => 36B+48G =1         ( by unitary method)


 


Again  14B+10G = 4days


 => 56B+40G =1


 


so, here it is clear that either we employ 36B and 48G to finish the work in 1 day or 56B and 40G to finish the same job in 1 day. thus , we can say


 => 36B+48G = 56B+40G


 => G= 2.5B


Thus a Girl is 2.5 times as efficient as a boy.


 


Now, since  36B+48G = 1


 => 36B+48(2.5 B)=1


 =>156B=1


i.e., to finish the job in 1 day 156 boys are required or the amount of work is 156 boys-days


 


Again    1G+1B=2.5B+1B=3.5B


 


Now, since 156 boys can finish the job in 1 day


so 1 boy can finish the job in 156 days


Therefore, 3.5 boys can finish the job in 1×1563.5= 47 days.


 


 

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Subject: Time and Work

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Q:

Find the principal which yields $25,000 when invested at 3% annually for 20 years.

A) 13841.89 B) 14821
C) 13468 D) 57389
 
Answer & Explanation Answer: A) 13841.89

Explanation:

P=F1+in

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Filed Under: Simple Interest
Exam Prep: Bank Exams
Job Role: Bank PO

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Q:

A box contains 2 blue balls, 3 green balls and 4 yellow balls. In how many ways can 3 balls be drawn from the box, if at least one green ball is to be included in the draw?

A) 48 B) 24
C) 64 D) 32
 
Answer & Explanation Answer: C) 64

Explanation:

Total number of balls = 2 + 3 + 4 = 9

Total number of ways 3 balls can be drawn from 9 = 9C3

No green ball is drawn = 9 - 3 = 6 = 6C3

Required number of ways if atleast one green ball is to be included = Total number of ways - No green ball is drawn

= 9C3 - 6C3

= 9x8x7/3x2  -  6x5x4/3x2

= 84 - 20

= 64 ways.

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Filed Under: Permutations and Combinations
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6 4157
Q:

Hill : Mountain :: Stream : ____

A) Canal B) Glacier
C) River D) Dam
 
Answer & Explanation Answer: C) River

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams

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Q:

A survey was conducted to find what genre of movies people liked the most. 1200 people answered the survey. The pie chart shows the results of that survey. The numbers in the pie chart are the ratios. Study the diagram and answer the following questions.

Which two genres of movies were liked the least?

A) Fiction and Historical B) Fiction and Drama
C) Drama and Historical D) Drama and Romance
 
Answer & Explanation Answer: A) Fiction and Historical

Explanation:
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Filed Under: Pie Charts
Exam Prep: Bank Exams

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Q:

B is the brother of A and E is the brother of D. If D is the father of B then how E and A are related?

A) E is brother of A B) A is nephew of E
C) E is father of A D) E is Uncle of A
 
Answer & Explanation Answer: D) E is Uncle of A

Explanation:
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Filed Under: Blood Relations
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Q:

Find the one which does not belong to that group ?

A) Kidneys B) Eyes
C) Fingers D) Lungs
 
Answer & Explanation Answer: C) Fingers

Explanation:

All are organs of our body which are in pairs except fingers.

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Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT , GRE , TOEFL
Job Role: Bank Clerk , Bank PO

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