Aptitude and Reasoning Questions

Q:

Find the minimum number of straight lines required to make the given figure.

A) 13 B) 15
C) 17 D) 19
 
Answer & Explanation Answer: A) 13

Explanation:

  

The horizontal lines are IJ, AB, EF, MN, HG, DC and LK i.e. 7 in number.

The vertical lines are AD, EH, IL, FG, BC and JK i.e. 6 in number.

Thus, there are 7 + 6 = 13 straight lines in the figure.

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Filed Under: Analytical Reasoning

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Q:

__bam__amb__m__a__bam

A) mbabm B) abmab
C) mabma D) ambbm
 
Answer & Explanation Answer: A) mbabm

Explanation:

Here "mba" is repeated 

 mbambambambambam

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Filed Under: Number Series

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Q:

The average marks of 50 students in an examination was 65. It was later found that the marks of one student had been wrongly entered as 83 instead of 38. The correct average is?

A) 63.9 B) 64.5
C) 64.7 D) 64.1
 
Answer & Explanation Answer: D) 64.1

Explanation:
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Filed Under: Average
Exam Prep: Bank Exams

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Q:

Three of the following four are alike in a certain way and hence form a group. Which is the one that does not belong to that group?

A) 8314 B) 3249
C) 2518 D) 1315
 
Answer & Explanation Answer: A) 8314

Explanation:

In all numbers except 8314, the sum of first three digits is equal to the unit's digit. 

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Filed Under: Classification

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Q:

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

 

Argument :

 

Warning : Consumption of alcohol is injurious to health.

 

Assumptions :

 

1. This warning is not required.

2. Non-alcoholic people are healthy.

 

A) Neither 1 nor 2 is implicit B) Only assumption 1 is implicit
C) Only assumption 2 is implicit D) Both 1 and 2 are implicit
 
Answer & Explanation Answer: A) Neither 1 nor 2 is implicit

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

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Q:

What is the probability that a number is divisible by 4?

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

Explanation:

Probability is Number of favourable outcomes by total outcomes

Total comes = 2 (Divisible or not)

Favourable = 1 (Divisible)

 

Hence, probability = 1/2.

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Filed Under: Probability
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Q:

What is 15 as a decimal?

A) 0.333 B) 0.666
C) 0.200 D) 0.452
 
Answer & Explanation Answer: C) 0.200

Explanation:

Here I converted the original fraction to a fraction with the denominator being 10, because decimals can be written in the tenths place.

Divide numerator and denominator with '2'15 x 22 = 210 = 0.2

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Filed Under: Decimal Fractions
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

A alone can do a work in 20 days. B is 125% more efficient than A. A and B started working and worked for 4 days. If C alone completed the remaining job in 22 days. How many days C alone takes to complete the entire job?

A) 30 B) 35
C) 40 D) 42
 
Answer & Explanation Answer: C) 40

Explanation:
A alone can do = 20days 
 
Efficiency ratio of A & B= 4 : 5

Time required will be in ratio = 5:4

B alone will do it in =16 days

LCM of (16,20)= 80 ,
 
Assume work size of 80 units

 

1 day work of A= 4 units 1 day work of B= 5 units

 

Work done by both in 4 days= 4*(5+4)= 36 units

 

Work left= 80-36= 44 units

 

Now C takes 22 days to complete= 44 units.

 

Time taken by C alone to complete the work= 40 days
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Filed Under: Time and Work
Exam Prep: Bank Exams

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