Quantitative Aptitude - Arithmetic Ability Questions

Q:

Two whole numbers are such that the square of first number exceeds the second by 112 and the ratio of the numbers is 4:3. What is thevalue of smaller number?

A) 3 B) 4
C) 12 D) 36
 
Answer & Explanation Answer: C) 12

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

If 25% of an electricity bill is deducted, Rs 1788 is still to be paid. How much was the bill?

A) Rs 1430 B) Rs 2420
C) Rs 1466 D) Rs 2384
 
Answer & Explanation Answer: D) Rs 2384

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

In a company 2/3 of the workers are girls, 1/2 of the girls are married and 1/3 of the married girls live in hostel. If 3/4 of the boys are married and 2/3 of married boys live in hostel. Calculate the part of workers who don’t live in hostel.

 

A) 11/18 B) 15/18  
C) 17/18   D) 13/18
 
Answer & Explanation Answer: D) 13/18

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

Two identical hemispheres of maximum possible size are cut from a solid cube of side 14 cm. The bases of the hemispheres are part of the two opposite faces of cube. What is the total volume (in cm3) of the remaining part of the cube?

A) 1556.33 B) 898.5
C) 1467.33 D) 1306.67
 
Answer & Explanation Answer: D) 1306.67

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

A solid sphere of radius 6 cm is melted and re-casted into a hollow cylinder of uniform thickness. If the external radius of the base of the cylinder is 5 cm and its height is 32 cm, find the uniform thickness of the cylinder ?

A) 3 cm B) 1.5 cm
C) 1 cm D) 2.5 cm
 
Answer & Explanation Answer: C) 1 cm

Explanation:

Let, inner radius of cylinder be ‘x’ cm.
4/3 π(6)3 = π × 32 (52 − x2)

or, (4 × 6 × 6 × 6) / (3 × 32) = 25 − x2 or, x2 = 25 − 9
or, x = 4 cm
Hence, thickness = 5 – 4 = 1 cm.

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Q:

In the given figure, AB, AE, EF, FG and GB are semicircles. AB = 56 cm and AE = EF = FG = GB. What is the area (in sq.cm) of the shaded region?

 

A) 414.46 B) 382.82
C) 406.48 D) 394.24
 
Answer & Explanation Answer: D) 394.24

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

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Q:

A boy in a train notices that he can count 31 telephone posts in 60 seconds. the distance between two posts is 60 meters. Calculate the speed of the train?

 

A) 90 kmph B) 108 kmph
C) 60 kmph D) 120 kmph
 
Answer & Explanation Answer: B) 108 kmph

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Filed Under: Problems on Trains
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Q:

50 litre mixture of water and alcohol contains 10% alcohol. How much more alcohol must be added to make the strength of alcohol 40% in the new mixture?

A) 25 B) 30
C) 20 D) 23
 
Answer & Explanation Answer: A) 25

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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