Aptitude and Reasoning Questions

Q:

If the mean of m observations out of n observations is n and the mean of remaining observations is m, then what is the mean of all n observations?

A) 2m –m^2/n B) 2m –m/n
C) 2m D) 2m –m
 
Answer & Explanation Answer: A) 2m –m^2/n

Explanation:

Mean of m observations is n

Mean of n-m observations is m

So total = nm+ (n-m)m

Total observations = n

Mean = Total / Total observations = (2mn-m^2)/n = 2m –m^2/n

 

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

How many triangles are there in the given figure?

A) 29 B) 24
C) 27 D) 21
 
Answer & Explanation Answer: A) 29

Explanation:
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Filed Under: Image Analysis
Exam Prep: Bank Exams

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Q:

5% of 400000?

A) 4000 B) 16000
C) 8000 D) 20000
 
Answer & Explanation Answer: D) 20000

Explanation:

5% of 400000

= 5 x 400000/100

= 20,000

 

Hence, 5% of 4,00,000 = 20,000

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

Karan purchased one dozen pens for Rs. 120 and sold a pack of 3 pens for Rs.35 each. What is his gain?

A) 16.67% B) 20%
C) 15% D) 33.33%
 
Answer & Explanation Answer: A) 16.67%

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

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Q:

Nisha's father's brother­-in-­law is the brother of Neha. How is Nisha related to Neha?

A) Sister B) Niece
C) Mother D) Mother in law
 
Answer & Explanation Answer: B) Niece

Explanation:
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Filed Under: Blood Relations
Exam Prep: Bank Exams

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Q:

In a certain code language,"MASTER" is written as "RETSAM". How is "LITERACY" written in that code language?

A) ETICRACY B) YCARETIL
C) YARCETIC D) ETICYACR
 
Answer & Explanation Answer: B) YCARETIL

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

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Q:

If it is possible to make a meaningful word with the first, the seventh, the ninth and the tenth letters of the word RECREATIONAL, using each letter only once, which of the following will be the third letter of the word? If more than one such word can be formed, give ‘X’ as the answer. If no such word can be formed, give ‘Z’ as the answer.

A) T B) X
C) N D) R
 
Answer & Explanation Answer: D) R

Explanation:

The first, the seventh, the ninth and the tenth letters of the word RECREATIONAL are R, T, O and N respectively. Meaningful word from these letters is only TORN. The third letter of the word is ‘R’.

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Q:

Statement: There is a substantial increase in the number of accidents causing deaths and severe injuries due to malfunctioning of the traffic signals.
Course of action:
a. The traffic police should immediately post traffic personnel at the junctions.
b. The signal system should immediately be repaired or replaced.

A) Only a follows B) Either a or b follows
C) Only b follows D) Neither a nor b follows
 
Answer & Explanation Answer: B) Either a or b follows

Explanation:

Clearly, either the traffic signals should be made to function properly or traffic personnel should be deployed to guide vehicular movement in the right way. So either I or II follows.

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