Quantitative Aptitude - Arithmetic Ability Questions

Q:

AB is a chord of the circle and its center is “O”. ON is perpendicular to AB. If the length of AB=20 cm, ON-(2√11) cm, find the radius (in cm) of the circle.

A) 10 B) 12
C) 13 D) 15
 
Answer & Explanation Answer: B) 12

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Filed Under: Volume and Surface Area
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Q:

In a cyclic quadrilateral ABCD , the side AB is extended to a point X. If ∠XBC = 82° and ∠ADB = 47° , then the value of ∠BDC is

A) 40° B) 35°
C) 30° D) 25°
 
Answer & Explanation Answer: B) 35°

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Filed Under: Volume and Surface Area
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Q:

In ΔABC, ∠B=90 deg and BC= √3 AB. Find the measurement of ∠A

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

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Filed Under: Volume and Surface Area
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Q:

Length of the sides of a triangle are a, b, c respectively. If a2 + b2 + c2 = ab +bc + ca then the triangle is

A) isosceles B) equilateral
C) scalene D) right­-angled
 
Answer & Explanation Answer: B) equilateral

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Q:

If D and E are points on the sides AB and AC respectively of a triangle ABC such that DE||BC. If AD = x cm, DB = (x – 3) cm, AE = (x + 3) cm and EC= (x – 2) cm, then what is the value (in cm) of x?

A) 3 B) 3.5
C) 4 D) 4.5
 
Answer & Explanation Answer: D) 4.5

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Q:

The Simple Interest(SI) for 16 years on an amount at particular rate is Rs 10000. If the principal is doubled at an interval of every 4 years and the rate is tripled at every such in terval, find the new Simple Interest(SI)

A) 632100 B) 689620
C) 602260 D) 647500
 
Answer & Explanation Answer: D) 647500

Explanation:
Let New SI be X

10000/16 = X/4(1*1+2*3+4*9+8*27)

10000/16=X/4(1+6+36+216)

X=647500

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Filed Under: Simple Interest
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Q:

The distance between two pillars is 120 metres. The height of one pillar is thrice the other. The angles of elevation of their tops from the midpoint of the line connecting their feet are complementary to each other. The height (in metres) of the taller pillar is (Use : √3 = 1.732)

A) 34.64 B) 51.96
C) 69.28 D) 103.92
 
Answer & Explanation Answer: D) 103.92

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Filed Under: Time and Distance
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Q:

A person purchased 10 shirts costing Rs 150 per shirt. Next day  he again purchased the shirts costing Rs 150 per shirt at a discount of Rs 30 per shirt and that day he spent a toal of Rs 1800. What is the average cost per shirt (in Rs)?

 

A) 125 B) 132
C) 138   D) 144
 
Answer & Explanation Answer: B) 132

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Filed Under: Average
Exam Prep: Bank Exams

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