6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

In the given figure, radius of a circle is 14√2 cm. PQRS is a square. EFGH, ABCD, WXYZ and LMNO are 4 identical squares. What is the total area (in sq.cm) of all the small squares ?

A) 31.36	B) 125.44
C) 62.72	D) 156.8

Answer & Explanation Answer: A) 31.36

Explanation:

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

0 1991

Q:

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 429, then what is the difference between the first and the third number?

A) 412	B) 468
C) 517	D) 427

Answer & Explanation Answer: B) 468

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Filed Under: Numbers
Exam Prep: Bank Exams

2 1991

Q:

In a triangle the length of the side opposite the angle which measures 30 degree is 12 cm, what is the length of the side opposite to the angle which measures 60 degree?

A) 9 cm	B) 12√3 cm
C) (15√3)/2 cm	D) (9√3)/2 cm

Answer & Explanation Answer: B) 12√3 cm

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Filed Under: Area
Exam Prep: Bank Exams

1 1991

Q:

Two equal circles intersect such that each passes through the centre of the other. If the length of the common chord of the circles is 10√3 cm, then what is the diameter of the circle?

A) 10 cm	B) 15 cm
C) 20 cm	D) 30 cm

Answer & Explanation Answer: C) 20 cm

Explanation:

Let there be 2 circles with centre O1 and OAB is the common chord

Since both passes through the center of each other as shown in figure

So O1O is the radius of both

Let O1O = r = AO1= AO

AX = AB / 2 = 5√3 cm (since OX perpendicular to chord bisects it)

AOO1 forms an equilateral triangle with on side = radius = r

Sin 60 = √3/2 = AX / AO = 5√3/r

So r = 10 cm

So diameter = 20 cm

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1991

Q:

The value of ${cosec}^{2} 60 + \sec^{2} 60 \cot^{2} 60 + \tan^{2} 30$ will be

A) 5	B) 5 1/2
C) 5 1/3	D) 5 2/3

Answer & Explanation Answer: C) 5 1/3

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Filed Under: Simplification
Exam Prep: Bank Exams

1 1990

Q:

An engineering student has to secure 36% marks to pass. He gets 53 and fails by 37 marks. Find the maximum marks.

A) 275 marks	B) 250 marks
C) 300 marks	D) 325 marks

Answer & Explanation Answer: B) 250 marks

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Filed Under: Percentage
Exam Prep: Bank Exams

0 1990

Q:

On a certain principal if the Simple interest for two years is Rs 3000 and Compound interest for the two years is Rs 3225, what is the rate of Interest?

A) 7.5 percent	B) 30 percent
C) 15 percent	D) 22.5 percent

Answer & Explanation Answer: C) 15 percent

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams

3 1990

Q:

A mason can build a wall in 70 hours. After 7 hours he takes a break. What fraction of the wall is yet to be built?

A) 0.9	B) 0.8
C) 0.5	D) 0.75

Quantitative Aptitude - Arithmetic Ability Questions

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