Aptitude and Reasoning Questions

Q:

9 men and 12 boys finish a job in 12 days, 12 men and 12 boys finish it in 10 days. 10 men and 10 boys shall finish it in how many days ?

A) 15 days B) 11 days
C) 14 days D) 12 days
 
Answer & Explanation Answer: D) 12 days

Explanation:

9M + 12B ----- 12 days ...........(1)
12M + 12B ------- 10 days........(2)
10M + 10B -------?
108M + 144B = 120M +120B
24B = 12M => 1M = 2B............(3)

From (1) & (3)

18B + 12B = 30B ---- 12 days

20B + 10B = 30B -----? => 12 days.

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Filed Under: Time and Work
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

22 26516
Q:

A and B invests Rs.8000 and Rs.9000 in a business. After 4 months, A withdraws half of his capital and 2 months later, B withdraws one-third of his capital. In what ratio should they share the profits at the end of the year  ?

A) 21:29 B) 41:54
C) 32:45 D) 37:51
 
Answer & Explanation Answer: C) 32:45

Explanation:

             A              :               B
(8000x4)+(4000x8) : (9000x6)+(6000x6)
         64000           :      90000
=>        32 : 45

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Filed Under: Ratios and Proportions
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

28 26515
Q:

Select the wrong number from the given series?

 

6, 12, 20, 32, 42, 56, 72

A) 32 B) 20
C) 72 D) 56
 
Answer & Explanation Answer: A) 32

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 26510
Q:

In the following question, select the missing number from the given series.

2187, 729, 243, 81, 27, ?

A) 10 B) 9
C) 13 D) 11
 
Answer & Explanation Answer: B) 9

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams

0 26506
Q:

Vipin's and Javed's salaries are in the proportion of 4 : 3 respectively. What is Vipin's salary ?

I. Javed's salary is 75% that of Vipin's salary. 

II. Javed's salary is Rs 4500. 

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data even in both the statements together are not sufficient to answer the question
 
Answer & Explanation Answer: B) If the data in statement II alone are sufficient answer the question

Explanation:

Statement I is merely an interpretation of the information contained in the question

However, Vipin's salary can be determined from statement II as follows

Let Vipin's and Javed's salaries be 4x and ax respectively.

Then, 3x = 4500 or x = 1500 Vipin's salary = 4x = Rs 6000.

Thus, II alone is sufficient. 

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Filed Under: Data Sufficiency

18 26490
Q:

Find out the wrong term in the series 2, 5, 10, 50, 500, 5000

A) 5000 B) 500
C) 10 D) 50
 
Answer & Explanation Answer: A) 5000

Explanation:

Each term of the series is the product of the preceding two terms
So, 5000 is wrong and it must be replaced by (500*50) = 25000

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Filed Under: Number Series

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Q:

The area of a square is 42.25 cm². Find its perimeter (in cm).

 

A) 52 B) 26
C) 28 D) 56
 
Answer & Explanation Answer: B) 26

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

0 26486
Q:

In how many ways can 4 girls and 5 boys be arranged in a row so that all the four girls are together ?

A) 18000 B) 17280
C) 17829 D) 18270
 
Answer & Explanation Answer: B) 17280

Explanation:

Let 4 girls be one unit and now there are 6 units in all.

 

They can be arranged in 6! ways.

 

In each of these arrangements 4 girls can be arranged in 4! ways. 

 

Total number of arrangements in which girls are always together = 6! x 4!= 720 x 24 = 17280

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