Aptitude and Reasoning Questions

Q:

The standard deviation of the set {10, 11, 9, 11, 9} is

A) 1/√5 B) 2/√5
C) 3/√5 D) 0
 
Answer & Explanation Answer: B) 2/√5

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If the ratio of the cost price and the selling price of an article be 4:5, then the percentage of profit is:

A) 27.5 B) 25
C) 15 D) 10
 
Answer & Explanation Answer: B) 25

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The average of 29 consecutive even integers is 60. The highest of these integers is

A) 88 B) 118
C) 176 D) 120
 
Answer & Explanation Answer: A) 88

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Filed Under: Numbers
Exam Prep: Bank Exams

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Q:

A man walks 1 km on 1st day , 2 km on 2nd day , 3 km on 3rd day and so on . The total distance the man covers in 10 days is

A) 40 Km B) 50 Km
C) 55 Km D) 58 Km
 
Answer & Explanation Answer: C) 55 Km

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

A carpenter can build a cupboard in 48 hours. After 12 hours he takes a break. What fraction of the cupboard is yet to be built?

A) 0.4 B) 0.5
C) 0.75 D) 0.25
 
Answer & Explanation Answer: C) 0.75

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Before a battle there were the ratio of captains to soldiers was 2 : 7. During the war 25 captains and 100 soldiers were martyred. The new ratio of captains to soldiers became 3 : 10. What is the number of soldiers after the war?

A) 250 B) 200
C) 150 D) 100
 
Answer & Explanation Answer: A) 250

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

A can do a piece of work in 6 days working 8 hours a day while B can do the same work in 4 days working 10 hours a day. If the work has to be completed in 5 days, so how many hours do they need to work together in a day?

A) 59/11 B) 48/11
C) 70/11 D) 65/11
 
Answer & Explanation Answer: B) 48/11

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

The mean of 21 observations (all different) is 40. If each observation greater than the median is increased by 21, then the mean of observations will become:

A) 50 B) 30
C) 50.5 D) 45
 
Answer & Explanation Answer: A) 50

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Filed Under: Average
Exam Prep: AIEEE , Bank Exams , CAT

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