Aptitude and Reasoning Questions

Q:

 In a dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow will eat one bag of husk?

A) 1 B) 1/40
C) 40 D) 80
 
Answer & Explanation Answer: C) 40

Explanation:

Let the required number of days be x.

 

Less cows, More days (Indirect Proportion)

 

Less bags, Less days (Direct Proportion)

 

cows  1:40 :40:xbags   40:1 :40:x

 

1 x 40 x x = 40 x 1 x 40

 

=>  x = 40.

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Filed Under: Chain Rule

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Q:

fifteen persons are sitting around a circular table facing the centre. What is the probability that three particular persons sit together ?

A) 3/91 B) 2/73
C) 1/91 D) 3/73
 
Answer & Explanation Answer: A) 3/91

Explanation:

In a circle of n different persons, the total number of arrangements possible = (n - 1)!
Total number of arrangements = n(S) = (15 – 1)! = 14 !
Taking three persons as a unit, total persons = 13 (in 4 units)
Therefore no. of ways for these 13 persons to around the circular table = (13 - 1)! = 12!
In any given unit, 3 particular person can sit in 3!. Hence total number of ways that any three person can sit =
n(E) = 12! X 3!
Therefore P (E) = probability of three persons sitting together = n(E) / n(S) = 12! X 3 ! / 14!
= 12!x3x2 / 14x13x12! = 6/14x13 = 3/91

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Filed Under: Probability
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Q:

Refer the below data table and answer the following question.

What was the increase in the height of the child from 5th Birthday to 16th birthday?

 

A) 75 cms B) 70 cms
C) 65 cms D) 80 cms
 
Answer & Explanation Answer: B) 70 cms

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

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Q:

The two trains of lengths 400 m, 600 m respectively, running at same directions. The faster train can cross the slower train in 180 sec, the speed of the slower train is 48 kmph. Then find the speed of faster train  ?

A) 68 kmph B) 52 kmph
C) 76 kmph D) 50 kmph
 
Answer & Explanation Answer: A) 68 kmph

Explanation:

Let the speed of the faster train be 'X' kmph,
Then their relative speed= X - 48 kmph
To cross slower train by faster train,
Distance need to be cover = (400 + 600)m = 1 km. and
Time required = 180 sec = 180/3600 hr = 1/20 hr.
Time = Distance/Speed
=> 1/20 = 1/(x-48)
X = 68 kmph

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Filed Under: Problems on Trains
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Q:

Identify the diagram that best represents the relationship among the given classes.

Earth, Saturn, Planet, Star

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:
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Filed Under: Logical Venn Diagram
Exam Prep: Bank Exams

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Q:

When Ram was born, his father was 32 years older than his brother and his mother was 25 years older than his sister. If Ram's brother is 6 years older than Ram and his mother is 3 years younger than his father, how old was Ram's sister when Ram was born ?

A) 6 years B) 8 years
C) 10 years D) 12 years
 
Answer & Explanation Answer: C) 10 years

Explanation:

Ram age when he was born = 0 years
=> His brother's age = 6 year
=> His father's age = brother age + 32years = 6+32 = 38
=> His mother's age = father's age - 3 = 35
So sister's age = 35-25 = 10years.

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Filed Under: Problems on Ages
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Q:

Refer the below data table and answer the following question.

What is the value of total stock in lakh rupees?

 

A) 101.91 B) 1019.1
C) 133 D) 398
 
Answer & Explanation Answer: A) 101.91

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

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Q:

Refer the below data table and answer the following question.

Rent and Taxes were what percent of total expenses?

A) 14.07 percent B) 21.32 percent
C) 28.57 percent D) 35.82 percent
 
Answer & Explanation Answer: C) 28.57 percent

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

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