6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is that least digit that must be added to the product 5786 × 5784 to make it a perfect square?

A) 1	B) 6
C) 5	D) 4

Answer & Explanation Answer: A) 1

Explanation:

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

A, B and C can do a job working alone in 12, 16 and 24 days respectively. In how many days they can do the job if they worked together?

A) 16/3	B) 15/4
C) 17/3	D) 19/4

Answer & Explanation Answer: A) 16/3

Explanation:

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Filed Under: Time and Work
Exam Prep: Bank Exams

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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 sphere to that of cone?

A) 6√3:1	B) 7 : 2
C) 3√3:1	D) 5√3:1

Answer & Explanation Answer: A) 6√3:1

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)

Volume of sphere/volume of cone =

\frac{\frac{4}{3} {πr}_{1}^{3}}{\frac{1}{3} {πr}_{2}^{2} h}

= 6√3:1

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

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Q:

Two circles touch externally. The sum of their areas is $130 π$ sq.cm and the distance between their centers is 14 cm. The radius of the bigger circle is

A) 22 cm	B) 11 cm
C) 33 cm	D) 44 cm

Answer & Explanation Answer: B) 11 cm

Explanation:

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

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Q:

If selling price is Rs. 72 and Gain percentage = 20%, calculate the Cost Price.

A) Rs.60	B) Rs.58
C) Rs.61	D) Rs.59

Answer & Explanation Answer: A) Rs.60

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The age of Dr. Pandey is four times the age of his son. After 10 years , the age of Dr. Pandey will be twice the age of his son . The present age of Dr. Pandey's son is

A) 4 years	B) 5 years
C) 6 years	D) 8 years

Answer & Explanation Answer: B) 5 years

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

In the following question, select the odd letters from the given alternatives.

A) CD	B) PR
C) ST	D) WX

Answer & Explanation Answer: B) PR

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

Marked price of an item is Rs 900. On purchase of 2 items discount is 16%, on purchase of 5 items discount is 44%. Raksha buys 7 items, what is the effective discount?

A) 10 percent	B) 16 percent
C) 36 percent	D) 9.6 percent

Quantitative Aptitude - Arithmetic Ability Questions

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