Aptitude and Reasoning Questions

Q:

A right circular cylinder has height 28 cm and radius of base 14 cm. Two hemispheres of radius 7 cm each are cut from each of the two bases of the cylinder. What is the total surface area (in cm2) of the remaining part?

A) 3842 B) 4312
C) 3296 D) 4436
 
Answer & Explanation Answer: B) 4312

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

When a number is increased by 24, it becomes 115% of itself. What is the number?

A) 160 B) 250
C) 100 D) 200
 
Answer & Explanation Answer: A) 160

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If Rs 25,000 is to be divided between A, B and C in the ratio 1/10 : 1/6 : 1/15, then how much will C get (in Rs)?

A) 5000 B) 7500
C) 10000 D) 12500
 
Answer & Explanation Answer: A) 5000

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

The ratio of present ages of P and Q is 7:9. Before 10 years the ratio of their ages was 5:7. What is Q's present age (in years)?

A) 35 B) 45
C) 25 D) 55
 
Answer & Explanation Answer: B) 45

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

A milkman buys milk at Rs 24 per litre. He adds 1/5 of water to it and sells the mixture at Rs 32 per litre. What will be his gain (in %)?

A) 50 B) 40
C) 30 D) 60
 
Answer & Explanation Answer: D) 60

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

If ax= by= cz and b2= ac, then what is 1x+1z equal to ?

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

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

In a container, there is 960 ltr of pure milk from which 48 ltr of milk is replaced with 48 ltr of water, again 48 ltr milk is replaced by same amount of water, as this process is done once more. Now, what is the amount of pure milk?

A) 901.54 ltr B) 821.54 ltr
C) 719.64 ltr D) 823.08 ltr
 
Answer & Explanation Answer: D) 823.08 ltr

Explanation:

Amount of pure milk= a(1 –b/a)n(n = 3, a = pure milk and b = amount replaced)= 960 (1 –48/960)^3= 960(1-1/20)^3= 960 * 19/20 * 19/20*19/20= 823.08 lt.

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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Q:

The minimum value of LCM of given numbers is ........... the product of all the given numbers.

A) always greater than B) always less than
C) always equal to D) None
 
Answer & Explanation Answer: D) None

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

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