Aptitude and Reasoning Questions

Q:

A cuboid has dimensions 8 cm x 10 cm x 12 cm. It is cut into small cubes of side 2 cm. What is the percentage increase in the total surface area?

A) 286.2 B) 314.32
C) 250.64 D) 386.5
 
Answer & Explanation Answer: D) 386.5

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

What is the smplified value of Sin2A/1+Cos2A ?

A) tan A B) cot A
C) sin A D) cos A
 
Answer & Explanation Answer: A) tan A

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

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Q:

Two numbers whose sum is 84 can not be in the ratio

A) 5:7 B) 13:8
C) 1:3 D) 3:2
 
Answer & Explanation Answer: D) 3:2

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

A  field  can  be  reaped  by  12  men  or  18  women  in  14  days.  In  how  many  days  can  8  men  and  16 women reap it?

A) 26 days B) 24 days
C) 9 days D) 8 days
 
Answer & Explanation Answer: C) 9 days

Explanation:
12 men or 18 women can complete in 14 days
8 men and 16 women can complete in how many days
12men = 18 women (Comparing efficiencies)
1men = 18/12 = 1.5 women
8 men and 16 women = 12women + 16 women = 28 women
18 women completes in 14 days
1 woman completes in 14*18 days
28 women completes in (14*18)/28 days = 9 days
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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

If A = 30°, B = 60° and C = 135°, then what is the value of sin3A + cos3B + tan3C  3sin A cos B tan C?

A) 0 B) 1
C) 8 D) 9
 
Answer & Explanation Answer: A) 0

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

In an army selection process, the ratio of selected to unselected candidates was 9:2. If 80 less had applied and 20 less selected, the ratio of selected to unselected would have been 5:1. How many candidates had applied for the process?

A) 6160 B) 1540
C) 3080 D) 9240
 
Answer & Explanation Answer: C) 3080

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Filed Under: Ratios and Proportions
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

If in a certain language, STRING is coded as TSIRGN, how is RANDOM coded in that code?

A) ANRDMO B) ARDONM
C) ARDNMO D) ADRONM  
 
Answer & Explanation Answer: C) ARDNMO

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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Q:

A train is moving at the speed of 72 km/hr. How many seconds will it take to cover a distance of 1400 m ?

A) 70 B) 80
C) 72 D) 84
 
Answer & Explanation Answer: A) 70

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Filed Under: Problems on Trains
Exam Prep: Bank Exams

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