Aptitude and Reasoning Questions

Q:

The complexity of linear search algorithm is

A) O(n2) B) O(n log n)
C) O(n) D) O(log n)
 
Answer & Explanation Answer: C) O(n)

Explanation:

The worst case complexity of linear search is O(n).

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Filed Under: Arithmetical Reasoning
Exam Prep: AIEEE , Bank Exams , GATE
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Q:

In a certain code language "GASTRIC" is written as "UCIREKT". How will "DECEIVE" be written in that code language?

A) ACBCCTG B) ACACCTG
C) EGFCGXK D) BFCCTGL
 
Answer & Explanation Answer: C) EGFCGXK

Explanation:
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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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Q:

Introducing a man, a girl says " He is the only son of my mother's mother." How is the man related to the girl ?

A) Uncle B) Paternal Uncle
C) Father D) Maternal Uncle
 
Answer & Explanation Answer: D) Maternal Uncle

Explanation:
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Filed Under: Blood Relations

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Q:

Selling price of a fan is Rs 4644. If profit percentage is 29%, then what is the cost price (in Rs) of fan?

A) 5900 B) 3500
C) 3800 D) 3600
 
Answer & Explanation Answer: D) 3600

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The difference between two numbers is 25. The smaller number is 1/6th of the larger number. What is the value of the smaller number?

A) 10 B) 5
C) 50 D) 25
 
Answer & Explanation Answer: B) 5

Explanation:

Let the larger number be p

Then, smaller number = 1/6 x p = p/6

Given difference between two numbers = 25

p - p/6 = 25

5p/6 = 25

5p = 150

p = 30

Then, p/6 = 30/6 = 5

Hence, larger number = 30 and smaller number = 5 which makes the difference = 25.

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Filed Under: Problems on Numbers
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

If a boat goes a certain distance at 30 km/hr and comes back the same distance at 60 km/hr. What is the average speed (in km/hr) for the total journey?

A) 45 B) 50
C) 40 D) 35
 
Answer & Explanation Answer: C) 40

Explanation:
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Filed Under: Boats and Streams
Exam Prep: Bank Exams

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Q:

3 x 3 + 3 - 3 + 3 = ?

A) 9 B) 12
C) -3 D) 3
 
Answer & Explanation Answer: B) 12

Explanation:

Using BODMAS law,

3 x 3 + 3 - 3 + 3 =

3 x 3 = 12

= 12 + 3 - 3 + 3

=  9 + 3

= 12

 

Hence, 3 x 3 + 3 - 3 + 3 = 12.

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Q:

If A and B together do a job in 7.5 days and if A could do the job in 10 days if he worked alone. How many days would B take to do the job if he worked alone?

A) 30 B) 40
C) 25 D) 50
 
Answer & Explanation Answer: A) 30

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

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