Quantitative Aptitude - Arithmetic Ability Questions

Q:

ΔDEF is right angled at E. If m∠F = 30 deg, then find the value of (sinD - 1/3).

A) -1/2√3   B) (3√3-2)/6  
C) (√2-√3)/√6   D) (2√2-1)/√2
 
Answer & Explanation Answer: B) (3√3-2)/6  

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Q:

Compute : (50 + 0.5 x 20) / 0.7

A) 8.571 B) 85.1
C) 85.71 D) 72.85
 
Answer & Explanation Answer: C) 85.71

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Q:

Which of the following option is CORRECT about the figure shown below?

A) OA – AR = OB + BR B) OA + AR = OB – BR
C) OA + AR = OB + BR D) None of these
 
Answer & Explanation Answer: C) OA + AR = OB + BR

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Q:

Find the sum of the measures all the interior angles of a polygon having 12 sides.

A) 1800° B) 2520°
C) 2880° D) 3240°
 
Answer & Explanation Answer: A) 1800°

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Q:

The point equidistant from the sides of a triangle is called

A) Circumcenter B) Incentre
C) Orthocentre D) Centroid
 
Answer & Explanation Answer: B) Incentre

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Q:

AD is the Median of Δ ABC. If O is the centroid and AO = 10 cm then OD is

A) 5 cm B) 20 cm
C) 10 cm D) 30 cm
 
Answer & Explanation Answer: A) 5 cm

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Q:

Average marks obtained by 19 boys of a college is 56. If the highest marks and lowest marks obtained are removed, then the average reduces by 2. What is the average of the highest and lowest marks obtained?

 

A) 77   B) 69  
C) 73   D) 75
 
Answer & Explanation Answer: C) 73  

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Q:

The lengths of two parallel sides of a trapezium are 21 cm and 9 cm. If its height is 10 cm, then what is the area (in cm2) of the trapezium?

A) 35 B) 75
C) 150 D) 225
 
Answer & Explanation Answer: C) 150

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