Aptitude and Reasoning Questions

Q:

A drum contains 80 litres of ethanol. 20 litres of this liquid is removed and replaced with water. 20 litres of this mixture is again removed and replaced with water. How much water (in litres) is present in this drum now?

A) 45 B) 40
C) 35 D) 44
 
Answer & Explanation Answer: C) 35

Explanation:
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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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Q:

A and B can together do a piece of work in 10 days. If A works with twice of his efficiency and B works with an efficiency 1/3rd less than his efficiency, then the work gets completed in 6 days. In how many days can A and B do the work alone respectively?

A) 40/3, 40 B) 20/3, 20
C) 30, 20/3 D) 50/3, 25
 
Answer & Explanation Answer: A) 40/3, 40

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Two number P & Q are 20 % and 28 % less then a number X. What is the percentage the number Q is smaller then the number P?

A) 10% B) 23%
C) 12% D) 13%
 
Answer & Explanation Answer: A) 10%

Explanation:

Let the number X is 100

Then, PÃ 80 QÃ 72

So, Percentage decrease from P to Q is à 8/80=0.1-100=10%

1 is the right choice.

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Filed Under: Percentage

1 3512
Q:

X2+X2 =

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

Explanation:

Here the given expression, 

X2 + X is an algebraic expression. Here in this expression the terms are like terms. Now to add them, add their coefficients.

Here in the given expression, the like terms are two X

Hence, adding their coefficients i.e, 1 + 1 = 2

Therefore, 

 

X2 + X2 = 2X2.

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Filed Under: Mathematical Operations
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: IT Trainer , Bank PO , Bank Clerk , Analyst

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Q:

From well shuffled standard pack of 52 playing cards,one card is drawn. What is the probability that it is either a red card or black card?

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

Explanation:

P(red cards)=26/52

P(black cards)=26/52

P(red or black cards)=26/52+26/52=1

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Filed Under: Probability

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Q:

X starts a business with Rs 80000. After 6 months Y joins X with Rs 100000. After 2 years, what will be the ratio of profit of X and Y?

A) 16 : 15 B) 4 : 5
C) 8 : 9 D) 14 : 15
 
Answer & Explanation Answer: A) 16 : 15

Explanation:
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Filed Under: Partnership
Exam Prep: Bank Exams

1 3510
Q:

Ankita travels 35 km towards the west, takes a right turn and travels 50 km more. Next, she takes another right turn and travels 35 km in that direction. How far is she now from her original position?

A) 75 km B) 20 km
C) 25 km D) 50 km
 
Answer & Explanation Answer: D) 50 km

Explanation:
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Filed Under: Direction Sense Test
Exam Prep: Bank Exams

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Q:

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. D-4, F-6, H-8, J-10, ?, ?

A) L-12,N-14 B) K-12, M-14
C) K-14, M-14 D) K-12, M-14
 
Answer & Explanation Answer: A) L-12,N-14

Explanation:

The letters are alternate and the numbers indicate their position in the alphabet from the beginning.

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Filed Under: Number Series

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