Quantitative Aptitude - Arithmetic Ability Questions

Q:

Rearrange the jumbled up letters to form a meaningful word and find the odd one out.

A) ROUWBR B) EDN
C) ORFO D) ETNS
 
Answer & Explanation Answer: C) ORFO

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Q:

Ravi had five subjects in his final examination. The maximum marks in each subject are 100. If his percentage in four subjects is 80, and he scores 65 marks in the fifth subject, determine his overall percentage for the five subjects.

A) 0.78 B) 0.79
C) 0.77 D) 0.76
 
Answer & Explanation Answer: C) 0.77

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Filed Under: Percentage
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Q:

A defective piece of article which costs Rs. 1200 is being sold at a loss of 15%. If the price is further reduced by 5%, find the S.P?

A) Rs.960 B) Rs.990
C) Rs.1000 D) Rs.969
 
Answer & Explanation Answer: D) Rs.969

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Exam Prep: Bank Exams

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Q:

A person borrows some money for 8 years at a rate of simple interest. If the ratio of principal and total interest is 5 : 8, then what is the rate ( inpercentage) of interest?

A) 10 B) 20
C) 25 D) 30
 
Answer & Explanation Answer: B) 20

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Filed Under: Simple Interest
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Q:

The radius of two cylinders are in the ratio of 3:2 and their heights are in the ratio 3:7. The ratio of their volumes is :

A) 4:7 B) 7:4
C) 28:27 D) 27:28
 
Answer & Explanation Answer: D) 27:28

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Filed Under: Volume and Surface Area
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Q:

A cube is inscribed in a sphere. A right circular cylinder is within the cube touching all the vertical faces. A right circular once is inside the cylinder. Their heights are same and the diameter of the cone is equal to that of the cylinder.

What is the ratio of the volume of the cube to that of the cylinder ?

A) 4 : 3 B) 21 : 16
C) 14 : 11 D) 45 : 32
 
Answer & Explanation Answer: C) 14 : 11

Explanation:
The top view of the given assembly will look like the figure above
Outermost is the sphere. Inside that there is a cube and within that there is a cone and cylinder with same radius.
Here side of cube = a
Diameter of Sphere = body diagnol = √3 a
Radius of sphere = √3 a/2 =r1
Height of Cylinder = Height of cone = side of cube = a =h
Radius of cylinder = Radius of cone = side of cube/2 = a/2 =r2(as shown in the figure)
VcubeVcylinder = a3πr22h = 14/11
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Filed Under: Volume and Surface Area
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Q:

The line segment AB intersects the straight line CD at B; AB will be smallest when ∠ ABD (in degrees) is

A) 30 B) 60
C) 90 D) 45
 
Answer & Explanation Answer: C) 90

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Filed Under: Volume and Surface Area
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Q:

Find the least number which when divided by 12, 15, 18 and 27 leaves remainders 10, 13, 16 and 25 respectively.

A) 540 B) 538
C) 542 D) 552
 
Answer & Explanation Answer: B) 538

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Filed Under: Problems on Numbers
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