Quantitative Aptitude - Arithmetic Ability Questions

Q:

AB is the chord of circle of length 6 cm. From the center of the circle a perpendicular is drawn which intersects the chord at D and distance between centre and chord is 4 cm. find the area (in cm2) of the circle)

 

A) 55   B) 61.5  
C) 70   D) 78.5
 
Answer & Explanation Answer: D) 78.5

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Filed Under: Area
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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:

In a farm, there are goats and peacocks. If the number of heads are 60 and the number of feet are 170, then the number of goats = ?

A) 18 B) 20
C) 23 D) 25
 
Answer & Explanation Answer: D) 25

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Filed Under: Simplification
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Q:

The angle of elevation of an aeroplane from a point on the ground is 60 deg. After flying for 30 seconds, the angle of elevation changes to 30 deg. If the aeroplane is flying at a height of 4500 m, then what is the speed (in m/s) of aeroplane?

A) 50√3 B) 100√3
C) 200√3 D) 300√3
 
Answer & Explanation Answer: B) 100√3

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Filed Under: Height and Distance
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Q:

10 dozen apples, 15 dozen mangoes & 20 dozen oranges are kept for sale. 1/2, 1/3rd & 1/4th of each item respectively have been added. What is the total number of fruits kept for sale now?

A) 720 B) 600
C) 580 D) 820
 
Answer & Explanation Answer: A) 720

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Q:

If DE is parallel to BC and bisects the other two sides of the triangle ABC such that the ratio AD/DB = 5/13 and the length of the part EC is 26 cm. Then determine the length of AE (in cm).

A) 5 B) 10
C) 15 D) 20
 
Answer & Explanation Answer: B) 10

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Filed Under: Volume and Surface Area
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Q:

The smallest number by which 1875 must be divided to obtain a perfect square is

A) 3 B) 2
C) 7 D) 5
 
Answer & Explanation Answer: A) 3

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Filed Under: Problems on Numbers
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Q:

The angle of elevation of the top of a 36 m tall tower from the initial position of a person on the ground was 60 deg. She walked away in a manner that the foot of the tower, her initial position and the final position were all in the same straight line. The angle of elevation of the top of the tower from her final position was 30 deg. How much did she walk from her initial position?

 

A) 24√3 m B) 12√3 m
C) 24 m D) 36√3 m
 
Answer & Explanation Answer: D) 36√3 m

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Filed Under: Height and Distance
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