Quantitative Aptitude - Arithmetic Ability Questions

Q:

 The line bisecting all the three angles of a triangle meets at a common point. This point is known as ______________.

A) circum-center B) centroid
C) orthocenter D) in-center
 
Answer & Explanation Answer: D) in-center

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Filed Under: Volume and Surface Area
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Q:

The length of shadow of a tower is √3 times that of its length. The angle of elevation of the sun is

A) 45° B) 30°
C) 60° D) none
 
Answer & Explanation Answer: B) 30°

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Filed Under: Height and Distance
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Q:

A pilot in an aeroplane at an altitude of 200 m observes two points lying on either side of a river. If the angles of depression of the two points be 45° and 60°, then the width of the river is

A) (200 + 200/√3) m B) (200 - 200/√3) m
C) 400 √3 m D) (400/√3) m
 
Answer & Explanation Answer: B) (200 - 200/√3) m

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Filed Under: Height and Distance
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Q:

Possible measures of three angles of a triangle are

A) 33°, 42°, 115° B) 40°, 70°, 80°
C) 30°, 60°, 100° D) 50°, 60°, 70°
 
Answer & Explanation Answer: D) 50°, 60°, 70°

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Filed Under: Volume and Surface Area
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Q:

The simple interest on a sum is 5/9 of the principal for 25 years. What is the rate (in percentage) of interest per annum?

 

A) 25/9   B) 9/2  
C) 20/9   D) 15/4
 
Answer & Explanation Answer: C) 20/9  

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Filed Under: Simple Interest
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Q:

The minimum number of straight lines required to construct the given figure is ___.

A) 11 B) 12
C) 9 D) 10
 
Answer & Explanation Answer: A) 11

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Filed Under: Volume and Surface Area
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Q:

In ΔPQR measure of angle Q is 90 deg. If cotP = 8/15, and PQ = 4cm, then what is the length (in cm) of side PR?

 

A) 8.5   B) 7.5  
C) 5   D) 4
 
Answer & Explanation Answer: A) 8.5  

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Filed Under: Area
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Q:

PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S such that QS = OR. If ∠QSR = 30°, then what is the value (in degrees)of POR?

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

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