Aptitude and Reasoning Questions

Q:

A and B together can complete a task in 12 days. However, if A works alone, completes half the job and leaves and then B works alone and competes the rest of the work, it takes 25 days in all to complete the work. If B is more efficient than A, how many days would it have taken B to do the work by herself?

A) 18 B) 22
C) 20 D) 15
 
Answer & Explanation Answer: C) 20

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

If 5x = 30-y = 6z, then what is the value of (xy + yz + zx)/xyz?

A) 0 B) 1
C) 2 D) 3
 
Answer & Explanation Answer: A) 0

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

To travel 672 km, an Express train takes 14 hours more than Rajdhani. If however, the speed of the Express train is doubled, it takes 8 hours less than Rajdhani. The speed of Rajdhani is

A) 30.5 km/hr B) 14.3 km/hr
C) 38.7 km/hr D) 22.4 km/hr
 
Answer & Explanation Answer: D) 22.4 km/hr

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Filed Under: Problems on Trains
Exam Prep: Bank Exams

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Q:

If xy = 48 and x2 + y2 = 100, then (x + y) is

A) 12 B) 16
C) 18 D) 14
 
Answer & Explanation Answer: D) 14

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

6 6 8 5 5 3 7 3 7 2 5 8 8 7 8 1 5 5 3 Using the above sequence find the term that does NOT belong to the group. 83, 35, 27, 81

A) 27 B) 83
C) 81 D) 35
 
Answer & Explanation Answer: A) 27

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Filed Under: Number Series

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Q:

If sinC - sinD = x, then value of x is

A) 2sin[(C+D)/2]cos[(C-D)/2] B) 2cos[(C+D)/2]cos[(C-D)/2]
C) 2cos[(C+D)/2]sin[(C-D)/2] D) 2sin[(C+D)/2]sin[(D-C)/2]
 
Answer & Explanation Answer: C) 2cos[(C+D)/2]sin[(C-D)/2]

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

A) 15 – 225 B) 25 – 625
C) 35 – 1225 D) 45 – 2525
 
Answer & Explanation Answer: D) 45 – 2525

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

In each question two equations numbered I and II are given,you haveto solve both the equation and choose the correctanswer.

I. 5x2+ 28x = -15II. 3y2+ 11y + 6 = 0

A) X > Y B) X ≥ Y
C) X < Y D) X ≤ Y
 
Answer & Explanation Answer:

Explanation:

5x^2+ 28x = -15x = (-3/5, -5)

II. 3y^2+ 11y + 6 = 0y = (-3, -2/3)

So Relationship cannot be established

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

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