Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the value of tan150°?

A) -√3 B) 1/√3
C) √3 D) -1/√3
 
Answer & Explanation Answer: D) -1/√3

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Filed Under: Simplification
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Q:

What is the area (in sq cm) of an equilateral triangle of side 6 cm?

A) 36√3 B) 9
C) 36 D) 9√3
 
Answer & Explanation Answer: D) 9√3

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Filed Under: Area
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Q:

In ΔABC, AD is the median and AD = (1/2)BC. If ∠ACD = 40°, then what is the value (in degrees) of ∠DAB?

A) 30 B) 40
C) 50 D) 60
 
Answer & Explanation Answer: C) 50

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Filed Under: Volume and Surface Area
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Q:

ABCD is a quadrilateral with AB = 9 cm, BC = 40 cm, CD = 28 cm, DA = 15 cm and angle ABC is a right –angel
What is the area of quadrilateral ABCD?

A) 300 SQ.CM   B) 306 SQ.CM
C) 312 SQ.CM D) 316 SQ.CM
 
Answer & Explanation Answer: D) 316 SQ.CM

Explanation:
Area of quadrilateral ABCD = area of triangle ADC + area of triangle ABC
= 126 + ½ * 9 * 40 = 306
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Filed Under: Volume and Surface Area
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Q:

Dodecahedron has 20 vertices. How many edges does it have?

A) 30 B) 16
C) 12 D) 24
 
Answer & Explanation Answer: A) 30

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Q:

If tan(A/2) = x, then the value of x is

A) (1 - cosA)/sinA B) (1 + cosA)/sinA
C) √[(1 - cosA)/sinA] D) √[(1 + cosA)/sinA]
 
Answer & Explanation Answer: A) (1 - cosA)/sinA

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Q:

A right circular solid cylinder has radius of base 7 cm and height is 28 cm. It is melted to form a cuboid such that the ratio of its side is 2 : 3 : 6. What is the total surface area (in cm2) cuboid?

A) 215633 B) 215693
C) 214833 D) 204833
 
Answer & Explanation Answer: B) 215693

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Filed Under: Volume and Surface Area
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Q:

A can do 1/3rd of a work in 5 days and B can do 2/5th of this work in 10 days. Both A and B, together can do the work in

A) 7 3/8 days B) 8 4/5 days
C) 9 3/8 days D) 10 days
 
Answer & Explanation Answer: C) 9 3/8 days

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Filed Under: Time and Work
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